The word well-being is 2 words, usually hyphenated.
As a rule, it would be two words: well being. well-being. You write it as a hyphenated word: well-being.
well-being well-to-do west-northwest
in-house - two words, hyphenated.
No it shouldn't be hyphenated. It is one word.
Hyphenated
It is a hyphenated adjective, life-giving.
Coordinate is one word.
"Reuse" is one word.
One-half is a hyphenated word. It begins with the letter O.
Yes, end-product is hyphenated. It is a noun and treated as one word which is hyphenated.
No...heartbeat is one word.