hitter vs striker

hitter and striker both are nouns.

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

As nouns, hitter and striker are synonyms defined as:

hitter (noun)	striker (noun)
(baseball) a ballplayer who is batting	the part of a mechanical device that strikes something
someone who hits	an employee on strike against an employer
	someone receiving intensive training for a naval technical rating
	a forward on a soccer team
	someone who hits