undercut vs tennis

undercut and tennis both are nouns.

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

undercut (noun)	tennis (noun)
(sports) a stroke that puts reverse spin on the ball	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 cut made underneath to remove material
a notch cut in the trunk of tree in order to determine the direction of its fall
the tender meat of the loin muscle on each side of the vertebral column
the material removed by a cut made underneath

undercut (verb)	tennis (verb)
strike (the ball) in golf, tennis, or hockey obliquely downward so as to give a backspin or elevation to the shot
cut away the underpart of
cut away material from the underside of (an object) so as to leave an overhanging portion in relief
cut obliquely into (a tree) below the main cut and on the side toward which the tree will fall
sell cheaper than one's competition