memorial park vs burying ground

memorial park and burying ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
memorial park	Yes	No	No	No
burying ground	Yes	No	No	No

As nouns, memorial park and burying ground are synonyms defined as:

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

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