fleet vs aircraft

fleet and aircraft both are nouns.

Word	Noun	Adjective	Verb	Adverb
fleet	Yes	Yes	Yes	No
aircraft	Yes	No	No	No

fleet (noun)	aircraft (noun)
a group of warships organized as a tactical unit	a vehicle that can fly
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)	aircraft (adjective)
moving very fast

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