nothings vs conversation

nothings and conversation both are nouns.

Word	Noun	Adjective	Verb	Adverb
nothings	Yes	No	No	No
conversation	Yes	No	No	No

As nouns, conversation is a hypernym of nothings; that is, conversation is a word with a broader meaning than nothings:

nothings: inconsequential conversation
conversation: the use of speech for informal exchange of views or ideas or information etc.

nothings (noun)	conversation (noun)
inconsequential conversation	the use of speech for informal exchange of views or ideas or information etc.