gunstock vs handgrip

gunstock and handgrip both are nouns.

Word	Noun	Adjective	Verb	Adverb
gunstock	Yes	No	No	No
handgrip	Yes	No	No	No

As nouns, handgrip is a hypernym of gunstock; that is, handgrip is a word with a broader meaning than gunstock:

gunstock: the handle of a handgun or the butt end of a rifle or shotgun or part of the support of a machine gun or artillery gun
handgrip: the appendage to an object that is designed to be held in order to use or move it

Other hypernyms of gunstock include grip, handle, hold, support.

gunstock (noun)	handgrip (noun)
the handle of a handgun or the butt end of a rifle or shotgun or part of the support of a machine gun or artillery gun	the appendage to an object that is designed to be held in order to use or move it