cutter vs ship's boat

cutter and ship's boat both are nouns.

Word	Noun	Adjective	Verb	Adverb
cutter	Yes	No	No	No
ship's boat	Yes	No	No	No

As nouns, cutter and ship's boat are synonyms defined as:

Other synonyms of cutter include pinnace, tender.

cutter (noun)	ship's boat (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