fleet vs war vessel

fleet and war vessel both are nouns.

Word	Noun	Adjective	Verb	Adverb
fleet	Yes	Yes	Yes	No
war vessel	Yes	No	No	No

fleet (noun)	war vessel (noun)
a group of warships organized as a tactical unit	a government ship that is available for waging war
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)	war vessel (adjective)
moving very fast

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