batter vs slugger

batter and slugger both are nouns.

Word	Noun	Adjective	Verb	Adverb
batter	Yes	No	Yes	No
slugger	Yes	No	No	No

As nouns, batter and slugger are synonyms defined as:

Other synonyms of batter include batsman, hitter.

batter (noun)	slugger (noun)
a liquid or semiliquid mixture, as of flour, eggs, and milk, used in cooking	(baseball) a ballplayer who is batting
(baseball) a ballplayer who is batting	a boxer noted for an ability to deliver hard punches

batter (verb)	slugger (verb)
make a dent or impression in
strike violently and repeatedly
strike against forcefully