navigation vs boat

navigation and boat both are nouns.

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

navigation (noun)	boat (noun)
the guidance of ships or airplanes from place to place	a small vessel for travel on water
the work of a sailor	a dish (often boat-shaped) for serving gravy or sauce
ship traffic

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