More common for artists, but a person who has extensive knowledge and expertise in a field is known in New York as a “maven”. (From Yiddish, which is pervasive in the average New Yorker’s vocabulary.) In fact, when you hear someone described as a “big muckety-muck” it is a mid-western U.S. interpretation of the Yiddish “macha” or “big macha” – which is what we say in NY. Yiddish not only has a lot of great descriptive terms, but it’s very onomatopoeic(?), so

If you’re writing a lyric, you could use cask (which rhymes with “task” — and makes an euphonious phrase).

No one will bat an eye if you refer to the bird with either pronunciation, but the Ford automobile is never. “FALL-CON.” (US)

— One word (sic): What is the United States?

What is this course of action? When you say convention, you could also say Convention. It is the societal trend to deposit the

elderly in institutions.