graveyard vs burying ground

graveyard and burying ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
graveyard	Yes	No	No	No
burying ground	Yes	No	No	No

As nouns, graveyard and burying ground are synonyms defined as:

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

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