why do we use world with a singular verb
There is no standard collective noun for a group of rules. A collective noun is an informal part of language, any noun that suits the context of the situation can function as a collective noun; for example, a book of rules, a list of rules, a world of rules, etc.
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, the noun 'kin' is not a collective noun.
There is no standard collective noun for the noun 'king' (most likely because kings rarely gather in groups). However, since collective nouns are an informal part of language, any noun that suits the situation can function as a collective noun; for example, a gathering of kings.
No it 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'.