Why humans run the world | Yuval Noah Harari

Important Vocabulary Words From The Video


Firefly is a common name for a type of insect that makes light by burning fuel. Fireflies are found all over the world, and they are sometimes called "lights in the night."

  • I saw a bunch of fireflies near the river.
  • They put out a firefly light show every year at the park.

Embarrassingly is a word that is used to describe something that is very embarrassing. When someone is embarrassingly dressed, they are wearing something that is not appropriate for the situation.

  • He was embarrassingly drunk at the party.
  • She was embarrassingly slow on the math test.

To beflexibly is to be able to adjust to changes or new situations easily. When you areflexibly prepared, you are able to deal with whatever comes your way.

  • She was flexibly dressed for the weather.
  • The company is flexibly using the space that they have.

A slaughterhouse is a place where animals are killed for their meat. The animals are usually killed by being cut open, and their meat is then processed and sold.

  • The slaughterhouse is in the same town as the grocery store.
  • The slaughterhouse is a few miles away from the town.

The adjective inquisitive means that you are interested in learning more about something. You might be inquisitive about a new subject, or you might be inquisitive about someone.

  • He was very inquisitive about the new city that had just been built.
  • She is very inquisitive about everything, which is why she is so nosy.

Fictions are things that are not real. Sometimes people use the word to refer to stories that are not true, but are still enjoyable to read or watch.

  • The stories in the novel are all fictions, which means that they are not true.
  • The movie is based on a true story, but the stories in the movie are all fictions.

Obeys is a word that is used to describe someone who is obedient. They will do what they're told, even if it's something that they don't want to do.

  • The children were obedient and they all listened to their father.
  • The soldier was obedient and he followed orders without question.

When something underlies something else, it is the foundation or support of that something. The underlies of a tree are the roots that hold it up, the trunk that supports it, and the branches that grow from it.

  • The underlies of the building are the ground and the foundation.
  • The underlies of the argument are the issues that were raised.

Castes are groups of people who are born into a particular group and are not allowed to change or join another group. In some societies, castes are still used today.

  • The castes are the people who work in the palace.
  • The castes are the people who are allowed to marry.