pelota vs jai alai

pelota and jai alai both are nouns.

Word	Noun	Adjective	Verb	Adverb
pelota	Yes	No	No	No
jai alai	Yes	No	No	No

As nouns, pelota and jai alai are synonyms defined as:

pelota and jai alai: a Basque or Spanish game played in a court with a ball and a wickerwork racket

pelota (noun)	jai alai (noun)
a Basque or Spanish game played in a court with a ball and a wickerwork racket	a Basque or Spanish game played in a court with a ball and a wickerwork racket