tennis vs undercut

tennis and undercut both are nouns.

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

tennis (noun)	undercut (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 reverse spin on the ball
	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

tennis (verb)	undercut (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