fleet vs bus line

fleet and bus line both are nouns.

Word	Noun	Adjective	Verb	Adverb
fleet	Yes	Yes	Yes	No
bus line	Yes	No	No	No

fleet (noun)	bus line (noun)
a group of warships organized as a tactical unit	an organization responsible for operating a bus transportation system
a group of steamships operating together under the same ownership
group of motor vehicles operating together under the same ownership
group of aircraft operating together under the same ownership

fleet (adjective)	bus line (adjective)
moving very fast

fleet (verb)	bus line (verb)
disappear gradually
move along rapidly and lightly; skim or dart