Correct Answer: Interest

When a person is interested in something, the frontalis muscles quickly raise eyebrows straight, and lip changes into a slight smile, which shows a sense of pleasure.

The facial expression of interest resembles with happiness. But when a person is happy, he/she shows exaggerated upward movements of lip corners, and the muscles near the eyes contract slightly more, without the eyebrow-raising straight up.

Correct Answer: Surprise

When a person is surprised his/her upper lids rise up and eyebrows arch. Along with this, jaws also fall and sometimes eyes widens, according to experts.

Correct Answer: Happiness

Just above the given picture is a classic representation of a genuine smile, known as the Duchenne smile, which hints at utter happiness.

There are two muscle movements here. The first one which is common to all smiles is the zygomatic major muscle that pulls the lip up. But, the real smile happens around the eyes, all the muscles tighten up around it, and the lower eyelid gets pouched.

Correct Answer: Disgust

When we feel disgust, the muscles above the upper lip pull up, raising the upper lip, wrinkling the nose, and narrowing the eyes.

People often look at disgust as anger. But when a person gets angry his/her mouth get tightens and lowers the eyebrows, and raises the upper portion of the eyelid.  But in a disgust case, the tongue comes out of the mouth and mouth remains open.

Correct Answer: Fear

Humans show fear when they feel a threat is coming to destroy their body, peace, mind, happiness and loved ones.

Surprise expression is sometimes looked like fear. But the case is different in both scenarios because when we are surprised, our eyes become wider. Also, during a surprise, our mouth doesn't get stretched sideways like it is shown in the above pictorial.

Usually, at the moment of fear, our jaws fall, and the mouth remains open. Besides, our eyebrows are generally level when we face fear.

Correct Answer: Embarrassment

In around 30% of embarrassing situations, individuals touch their own face, which is occurring here. Some experts are of the opinion that it happens due to defensive movement, to cover the face after the person disobey the social rule.

In some areas of the globe, people make a similar hand motion when they’re ashamed. But during a shameful situation, a person's head goes straight downwards without any smile.

Correct Answer: Contempt

Contempt is when a person looks at another person with suspicion. The facial expression of contempt is that the lips tighten only on one portion of the face. If there is a tightness on both sides of the face, then h/she might be swallowing or salivating.

It often looks like disgust, but there is upward movement of the upper lip in disgust, and also the bridge of the nose wrinkles. A person shows disgust about noxious things, not those about which we’re derisive or suspicious.

Correct Answer: Politeness

This is a non-Duchenne grin—a grin that doesn't flag genuine satisfaction. It shows that the individual is making an effort to appear to be affable and helpful, but they feel unhappy inside.

Here, the zygomatic major muscle pulls lip corners up, but there are no indications of delight ness near eyes— an absence of crow’s feet near sides, no presence of pouching of the lower eyelid, cheek does not rise.

Correct Answer: Amusement

The indications of amusement are the open mouth and the backwards head movement. Real laugh soothes all muscle movements in the body due to changes in our respiration patterns that occur when we laugh. This quick transition to a state of relaxation removes aggression or frustration.

Correct Answer: Compassion

When a person feels sympathy towards others, the corrugator muscles pull the eyebrows inside and up, their lips press each other, and their head moves forward marginally—an indication of social engagement.

The facial expression of compassion is often looked like sadness.

Eyebrow movements in compassion are similar to sadness, and when a person feels sad, lips are pulled downwards.

Correct Answer: Sadness

When a person is sad the inner part of his/her frontalis muscle pulls them up. Along with this, there’s a slight pouching in the inner portion of the forehead, and people will often look downwards in sadness. In addition, the corners of the lips re pulled downwards, giving the mouth a bent look.

The facial expression of sadness is often looked at as shame, and there is also oblique eyebrow muscle movements like compassion.

Correct Answer: Shame

In shameful situations, there is an involvement of a person's gaze aversion, with the head going down so that the chin stays into the neck. It is completely the opposite of pride: In pride, our head moves backwards, and our chin moves up.

This facial expression many times looks like sadness.  But there are no muscle movements of the sad face in shame.

Correct Answer: Desire

Desire is signalled through the mouth, with lip bites, puckers, or (as in this case) lip licks. People often make this facial expression when they’re interested in someone else sexually, but not necessarily romantically.

Desire is obviously a relative of love, but when people feel loving and trusting and devoted to someone else, as opposed to sexually aroused, they won’t necessarily make this kind of gesture with their mouth. Instead, they’ll often smile in a way that suggests happiness, with a head tilt to the side.

Correct Answer: Pain

When we feel pain, our facial muscles move in ways that contract the face and protect us from harm. In the upper half of the face, the orbicularis oculi muscles around the eyes contract, closing the eyes tightly, and the corrugator muscle lowers our eyebrows. In the lower half of the face, our lips tighten and press upwards.

Humans make this facial expression when they are going through psychological pain, like when they see other in a pathetic situation or suffering. It resembles sadness. But rather than suffering in their sadness, they experience the pain and suffering of others through empathy.

Correct Answer: Anger

When a person gets angry, there is muscle movement around the lips, eyebrows and eyes.

According to researchers, furrowed eyebrows could protect the face. That's why humans make such expressions when they feel threatened and frustrated or get aggressive.

Don't mix anger with disgust. There is a difference. During disgust, there is a movement around the upper lip and nose, which we don’t see when a human gets angry.

Correct Answer: Pain

When we feel torment, face gets contracts due to facial muscles which shield us from harm.

In the upper portion of the face, the orbicularis oculi muscles around the eyes contract, shutting the eyes, and the corrugator muscle brings down our eyebrows. Here, the lower half of the face, humans lips fix and press upwards. Particularly while encountering actual agony, individuals will now and then shrink their neck, as is occurring here, making this look much more like a showcase of self-preservation.

Correct Answer: Embarrassment

When a person feels embarrassing, they look here and there, and they tilt their head down sidewise, show their neck. Sometimes person also smiles, but there's a difference: The lips hold each other tightly, which shows feelings of restraint or inhibition.

When a person is ashamed, their head tilts straight down, and a smile is absent.

Correct Answer: Love

When we feel love, our facial expression looks like happiness. The zygomatic muscle moves the lip corners up, and the lower eyelid gets tighten up, and the head is tilted towards one side.

Correct Answer: Pride

At the proud moment, a person's head tilts backwards, and jaw thrusts outwards. These body movements show a person is feeling strong from inside.

They both involve a backward head movement, but in the contempt case, there is no smile, and the lip movement is asymmetrical—only one side tightens.

Correct Answer: Flirtatiousness

This is a shy, coquettish smile. When a person turns his/her head away to just show that I am not interested in you, but then they try to make eye contact with that person in whom they are actually interested.

Here, the zygomatic major muscle pulls the lip corners up and also raises the cheeks marginally. Also, the eyes are narrower than in a neutral state due to the contraction of the orbicularis oculi muscles near the eyes, which shows happiness.