idle words vs nothingness

idle words and nothingness both are nouns.

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

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

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

Other synonyms of idle words include jazz, malarkey, malarky, wind.

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