beanball vs beaner

beanball and beaner both are nouns.

Word	Noun	Adjective	Verb	Adverb
beanball	Yes	No	No	No
beaner	Yes	No	No	No

As nouns, beanball and beaner are synonyms defined as:

beanball and beaner: a baseball deliberately thrown at the batter's head

beanball (noun)	beaner (noun)
a baseball deliberately thrown at the batter's head	a baseball deliberately thrown at the batter's head