No, the word 'new' is not a noun. The word 'new' is an adjective and an adverb.
A noun is a word for a person, a place, or a thing.,
A collective noun is a noun used to group people or things in a descriptive way,
Examples:
Jack got a new bicycle for his birthday. (adjective, describes the noun 'bicycle')
The smell of new mown hay filled the air. (adverb, modifies the adjective 'mown')
A crew of workmen are paving our road. (collective noun)
NO, the noun 'New York City' is a singular, concrete, proper noun, the name of a specific place. A collective noun is a noun used to group people or things in a descriptive way;
Shoal is a collective noun. It is the collective noun for fish. A shoal of fish.The collective noun is a mint of candies
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 it is not a collective noun.
No, the noun 'kin' is not a collective noun.
The collective noun is an anthology of poetry.
No, games is not a collective noun. The collective noun for games is 'a compendium of games'.
The collective noun for 'wheat' is a sheaf of wheat.The collective noun for 'barley' is a crop of barley.