palestra vs palaestra

palestra and palaestra both are nouns.

Word	Noun	Adjective	Verb	Adverb
palestra	Yes	No	No	No
palaestra	Yes	No	No	No

As nouns, palestra and palaestra are synonyms defined as:

palestra and palaestra: a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes

palestra (noun)	palaestra (noun)
a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes	a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes