ground ball vs chopper

ground ball and chopper both are nouns.

Word	Noun	Adjective	Verb	Adverb
ground ball	Yes	No	No	No
chopper	Yes	No	No	No

As nouns, chopper is a hyponym of ground ball; that is, chopper is a word with a more specific, narrower meaning than ground ball:

Other hyponyms of ground ball include chop, roller.

ground ball (noun)	chopper (noun)
(baseball) a hit that travels along the ground	a grounder that bounces high in the air
	a butcher's knife having a large square blade
	an aircraft without wings that obtains its lift from the rotation of overhead blades
	informal terms for a human `tooth'