skin flick vs peepshow

skin flick and peepshow both are nouns.

Word	Noun	Adjective	Verb	Adverb
skin flick	Yes	No	No	No
peepshow	Yes	No	No	No

As nouns, peepshow is a hyponym of skin flick; that is, peepshow is a word with a more specific, narrower meaning than skin flick:

skin flick (noun)	peepshow (noun)
a pornographic movie	a short pornographic film shown in a small coin-operated booth
	an exhibition of pictures or objects viewed through a small hole or magnifying glass