curtilage vs side yard

curtilage and side yard both are nouns.

Word	Noun	Adjective	Verb	Adverb
curtilage	Yes	No	No	No
side yard	Yes	No	No	No

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

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

curtilage (noun)	side yard (noun)
the enclosed land around a house or other building	the grounds at either side of a house