pitcher vs ewer

pitcher and ewer both are nouns.

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

As nouns, pitcher and ewer are synonyms defined as:

pitcher (noun)	ewer (noun)
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
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