buzzword vs nonsense

buzzword and nonsense both are nouns.

Word	Noun	Adjective	Verb	Adverb
buzzword	Yes	No	No	No
nonsense	Yes	Yes	No	No

As nouns, nonsense is a hypernym of buzzword; that is, nonsense is a word with a broader meaning than buzzword:

buzzword: stock phrases that have become nonsense through endless repetition
nonsense: a message that seems to convey no meaning

Other hypernyms of buzzword include bunk, hokum, meaninglessness, nonsensicality.

buzzword (noun)	nonsense (noun)
stock phrases that have become nonsense through endless repetition	ornamental objects of no great value
	a message that seems to convey no meaning

buzzword (adjective)	nonsense (adjective)
	having no intelligible meaning