hitter vs walloper

hitter and walloper both are nouns.

Word	Noun	Adjective	Verb	Adverb
hitter	Yes	No	No	No
walloper	Yes	No	No	No

As nouns, walloper is a hyponym of hitter; that is, walloper is a word with a more specific, narrower meaning than hitter:

Other hyponyms of hitter include slapper, spanker.

hitter (noun)	walloper (noun)
(baseball) a ballplayer who is batting	a gross untruth; a blatant lie
someone who hits	a winner by a wide margin
	a very hard hitter