There does not seem to be a collective noun for 'humans' Suggestions are a crowd, a tribe, a group, a community or a nation
The collective noun for human arms is a pair of arms. The collective noun for arms as weapons could be armory, cache, or store of arms.
Shoal is a collective noun. It is the collective noun for fish. A shoal of fish.The collective noun is a mint of candies
The term most used for a group of human girls is a "giggle"
The noun 'man' in the collective sense is race or human race. The noun 'man' as an individual doesn't use a collective because the word is singular. A collective noun is used for a group of something.
There is no standard collective noun for a group of reflections. The noun 'reflection' is not a standard collective noun.
No, the noun lumber is not used as a collective noun. The collective noun for lumber is a stack of lumber.
No, the noun farm is not a collective noun.
The collective noun is a series of explosions.
No, the noun land is not a collective noun. However, any noun can function is as a collective noun in a suitable context without being a designated collective noun.
No, the noun 'kin' is not a collective noun.
No it is not a collective noun.
No, games is not a collective noun. The collective noun for games is 'a compendium of games'.