ferryboat vs boat

ferryboat and boat both are nouns.

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

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

ferryboat: a boat that transports people or vehicles across a body of water and operates on a regular schedule
boat: a small vessel for travel on water

ferryboat (noun)	boat (noun)
a boat that transports people or vehicles across a body of water and operates on a regular schedule	a small vessel for travel on water
	a dish (often boat-shaped) for serving gravy or sauce

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