empty words vs empty talk

empty words and empty talk both are nouns.

Word	Noun	Adjective	Verb	Adverb
empty words	Yes	No	No	No
empty talk	Yes	No	No	No

As nouns, empty words and empty talk are synonyms defined as:

Other synonyms of empty words include hot air, palaver, rhetoric.

empty words (noun)	empty talk (noun)
loud and confused and empty talk	loud and confused and empty talk