fire truck
No, the word 'firefighter' is a singular, common, compound noun; a word for a person.A collective noun is a word used to group people or things taken together as one whole.Some collective nouns that might be used for the noun firefighters are a company of firefighters, acrew of firefighters, a squad of firefighters, etc.
Yes, tow truck is a compound word because it is composed of two words that could be use separated.
There is no standard collective noun for firefighters, in which case a noun that suits the situation can be used; for example a crew of firefighters, a squadron of firefighters, a team of firefighters, etc.
Firetruck is a closed compound word.
No, "then" is not a compound word. It is a single word that is used as an adverb or a conjunction.
No, the word "because" is not a compound word. It is a conjunction that is used to introduce a reason or explanation.
smokee__e__
Yes the word nobody is a compound word. The words are no and body.
No, "whereas" is not a compound word. It is a single word used to contrast two different parts of a sentence.
No, "behind" is not part of a compound word. It is a standalone word used as a preposition or adverb in sentences.
It could be compound when used as an adjective e.g. a tigerskin handbag. Handbag is a compound word.
therefore is not a compound word because there is a word but fore is not