spitter vs expectorator

spitter and expectorator both are nouns.

Word	Noun	Adjective	Verb	Adverb
spitter	Yes	No	No	No
expectorator	Yes	No	No	No

As nouns, spitter and expectorator are synonyms defined as:

spitter and expectorator: a person who spits (ejects saliva or phlegm from the mouth)

spitter (noun)	expectorator (noun)
an illegal pitch in which a foreign substance (spit or Vaseline) is applied to the ball by the pitcher before he throws it	a medicine promoting expectoration
a person who spits (ejects saliva or phlegm from the mouth)	a person who spits (ejects saliva or phlegm from the mouth)