hurler vs pitcher

hurler and pitcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
hurler	Yes	No	No	No
pitcher	Yes	No	No	No

As nouns, hurler and pitcher are synonyms defined as:

Other synonyms of hurler include twirler.

hurler (noun)	pitcher (noun)
(baseball) the person who does the pitching	the position on a baseball team of the player who throws the ball for a batter to try to hit
	an open vessel with a handle and a spout for pouring
	(baseball) the person who does the pitching
	(botany) a leaf that is modified in such a way as to resemble a pitcher or ewer
	the quantity contained in a pitcher