cutter vs pinnace

cutter and pinnace both are nouns.

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

As nouns, cutter and pinnace are synonyms defined as:

Other synonyms of cutter include ship's boat, tender.

cutter (noun)	pinnace (noun)
a cutting implement; a tool for cutting	a boat for communication between ship and shore
a boat for communication between ship and shore
a sailing vessel with a single mast set further back than the mast of a sloop
someone whose work is cutting (as e.g. cutting cloth for garments)
someone who carves the meat
someone who cuts or carves stone