nothingness vs idle words

nothingness and idle words both are nouns.

Word	Noun	Adjective	Verb	Adverb
nothingness	Yes	No	No	No
idle words	Yes	No	No	No

As nouns, nothingness and idle words are synonyms defined as:

nothingness and idle words: empty rhetoric or insincere or exaggerated talk

Other synonyms of nothingness include jazz, malarkey, malarky, wind.

nothingness (noun)	idle words (noun)
empty rhetoric or insincere or exaggerated talk	empty rhetoric or insincere or exaggerated talk
the state of nonexistence