burial site vs burying ground

burial site and burying ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
burial site	Yes	No	No	No
burying ground	Yes	No	No	No

As nouns, burial site and burying ground are synonyms defined as:

Other synonyms of burial site include burial ground, cemetery, graveyard, memorial park, necropolis.

burial site (noun)	burying ground (noun)
a tract of land used for burials	a tract of land used for burials