palestra vs athletic field

palestra and athletic field both are nouns.

Word	Noun	Adjective	Verb	Adverb
palestra	Yes	No	No	No
athletic field	Yes	No	No	No

As nouns, athletic field is a hypernym of palestra; that is, athletic field is a word with a broader meaning than palestra:

palestra: a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes
athletic field: a piece of land prepared for playing a game

Other hypernyms of palestra include field, playing area, playing field.

palestra (noun)	athletic field (noun)
a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes	a piece of land prepared for playing a game