Yes / No

2 of the world's most useful words are probably Yes and No.

When we were just toddlers learning to understand the workings of the world, our parents taught us the most basic respond...yes or no. Even before our parents taught us these, we instinctively accept or reject things that we like or dislike.

Yes or No, in any language in this world are powerful communication words. If we are learning a foreign language, it is crucial that we get these 2 words right first.

For example (translated in any language):

Q: Are you hungry?
A: Yes / No

Q: Would you like $10 million?
A: Yes(by default) or No(for idiots)

Q: Do you want to die?
A: No(common sense) or Yes(depress idiots)

and so on...