tennis vs serve

tennis and serve both are nouns.

Word	Noun	Adjective	Verb	Adverb
tennis	Yes	No	No	No
serve	Yes	No	Yes	No

tennis (noun)	serve (noun)
a game played with rackets by two or four players who hit a ball back and forth over a net that divides the court	(sports) a stroke that puts the ball in play

tennis (verb)	serve (verb)
	do duty or hold offices; serve in a specific function
	put the ball into play
	provide (usually but not necessarily food)
	help to some food; help with food or drink
	deliver a warrant or summons to someone
	mate with
	be used by; as of a utility
	work for, or be a servant to
	devote (part of) one's life or efforts to, as of countries, institutions, or ideas
	do military service
	spend time in prison or in a labor camp
	contribute or conduce to
	promote, benefit, or be useful or beneficial to
	serve a purpose, role, or function
	be sufficient; be adequate, either in quality or quantity