There is no specific collective noun for the noun "nouns." However, I have seen a list of nouns.
The collective noun for nouns is a list of nouns.

There is no specific collective noun for "collective nouns." However, I have seen a list of collective nouns and a page of collective nouns.

There is no specific collective noun for "collective nouns." However, I have seen a list of collective nouns and a page of collective nouns.

list for collective nouns for pilgrims

Some collective nouns for the noun 'noun' are a list of nouns, a category of nouns, or a glossary of nouns.