Why do some languages have words for things while others do not?

Does it matter that English doesn’t have words to express certain ideas?

Are there certain ideas or experiences for which “there are no words”?

How linguistically diverse is the U.S., really?

Why does the U.S. have such a strange relationship with multilingualism compared to the rest of the world?

How can we re-define what constitutes “professional” language to better take advantage of linguistic diversity?