grape vs slipskin grape

grape and slipskin grape both are nouns.

Word	Noun	Adjective	Verb	Adverb
grape	Yes	No	No	No
slipskin grape	Yes	No	No	No

As nouns, slipskin grape is a hyponym of grape; that is, slipskin grape is a word with a more specific, narrower meaning than grape:

grape: any of various juicy fruit of the genus Vitis with green or purple skins; grow in clusters
slipskin grape: a grape whose skin slips readily from the pulp

Other hyponyms of grape include bullace grape, muscadine, vinifera grape.

grape (noun)	slipskin grape (noun)
a cluster of small projectiles fired together from a cannon to produce a hail of shot	a grape whose skin slips readily from the pulp
any of various juicy fruit of the genus Vitis with green or purple skins; grow in clusters
any of numerous woody vines of genus Vitis bearing clusters of edible berries