curtilage vs playground

curtilage and playground both are nouns.

Word	Noun	Adjective	Verb	Adverb
curtilage	Yes	No	No	No
playground	Yes	No	No	No

As nouns, playground is a hyponym of curtilage; that is, playground is a word with a more specific, narrower meaning than curtilage:

Other hyponyms of curtilage include backyard, dooryard, front yard, garden, side yard.

curtilage (noun)	playground (noun)
the enclosed land around a house or other building	yard consisting of an outdoor area for children's play
	an area where many people go for recreation, holidays or other purposes