lawn tennis vs ace

lawn tennis and ace both are nouns.

Word	Noun	Adjective	Verb	Adverb
lawn tennis	Yes	No	No	No
ace	Yes	Yes	Yes	No

lawn tennis (noun)	ace (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	a serve that the receiver is unable to reach
	one of four playing cards in a deck having a single pip on its face
	someone who is dazzlingly skilled in any field
	the smallest whole number or a numeral representing this number

lawn tennis (adjective)	ace (adjective)
	of the highest quality