nothingness vs malarkey

nothingness and malarkey both are nouns.

Word	Noun	Adjective	Verb	Adverb
nothingness	Yes	No	No	No
malarkey	Yes	No	No	No

As nouns, nothingness and malarkey are synonyms defined as:

nothingness and malarkey: empty rhetoric or insincere or exaggerated talk

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

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