soccer field vs playing area

soccer field and playing area both are nouns.

Word	Noun	Adjective	Verb	Adverb
soccer field	Yes	No	No	No
playing area	Yes	No	No	No

As nouns, playing area is a hypernym of soccer field; that is, playing area is a word with a broader meaning than soccer field:

soccer field: a sports field with predetermined dimensions for playing soccer
playing area: a piece of land prepared for playing a game

Other hypernyms of soccer field include athletic field, field, playing field.

soccer field (noun)	playing area (noun)
a sports field with predetermined dimensions for playing soccer	a piece of land prepared for playing a game