boat vs navigation

boat and navigation both are nouns.

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

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

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