burying vs burial

burying and burial both are nouns.

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

As nouns, burying and burial are synonyms defined as:

burying (noun)	burial (noun)
concealing something under the ground	concealing something under the ground
	the ritual placing of a corpse in a grave