night club vs honkytonk

night club and honkytonk both are nouns.

Word	Noun	Adjective	Verb	Adverb
night club	Yes	No	No	No
honkytonk	Yes	No	No	No

As nouns, honkytonk is a hyponym of night club; that is, honkytonk is a word with a more specific, narrower meaning than night club:

night club: a spot that is open late at night and that provides entertainment (as singers or dancers) as well as dancing and food and drink
honkytonk: a cheap disreputable nightclub or dance hall

Other hyponyms of night club include dive, supper club.

night club (noun)	honkytonk (noun)
a spot that is open late at night and that provides entertainment (as singers or dancers) as well as dancing and food and drink	a cheap disreputable nightclub or dance hall