palaestra vs athletic field

palaestra and athletic field both are nouns.

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

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

palaestra: 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 palaestra include field, playing area, playing field.

palaestra (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