cutter vs boat

cutter and boat both are nouns.

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

As nouns, boat is a hypernym of cutter; that is, boat is a word with a broader meaning than cutter:

cutter (noun)	boat (noun)
a cutting implement; a tool for cutting	a small vessel for travel on water
a boat for communication between ship and shore	a dish (often boat-shaped) for serving gravy or sauce
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

cutter (verb)	boat (verb)
	ride in a boat on water