empty words vs bunk

empty words and bunk both are nouns.

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

As nouns, bunk is a hypernym of empty words; that is, bunk is a word with a broader meaning than empty words:

Other hypernyms of empty words include hokum, meaninglessness, nonsense, nonsensicality.

empty words (noun)	bunk (noun)
loud and confused and empty talk	a bed on a ship or train; usually in tiers
	a rough bed (as at a campsite)
	beds built one above the other
	a long trough for feeding cattle
	unacceptable behavior (especially ludicrously false statements)
	a message that seems to convey no meaning

empty words (verb)	bunk (verb)
	flee; take to one's heels; cut and run
	provide with a bunk
	avoid paying