gig vs pinnace

gig and pinnace both are nouns.

Word	Noun	Adjective	Verb	Adverb
gig	Yes	No	No	No
pinnace	Yes	No	No	No

As nouns, pinnace is a hypernym of gig; that is, pinnace is a word with a broader meaning than gig:

Other hypernyms of gig include cutter, ship's boat, tender.

gig (noun)	pinnace (noun)
a booking for musicians	a boat for communication between ship and shore
small two-wheeled horse-drawn carriage; with two seats and no hood
tender that is a light ship's boat; often for personal use of captain
long and light rowing boat; especially for racing
an implement with a shaft and barbed point used for catching fish
a cluster of hooks (without barbs) that is drawn through a school of fish to hook their bodies; used when fish are not biting