obituary vs necrology

obituary and necrology both are nouns.

Word	Noun	Adjective	Verb	Adverb
obituary	Yes	No	No	No
necrology	Yes	No	No	No

As nouns, obituary and necrology are synonyms defined as:

obituary and necrology: a notice of someone's death; usually includes a short biography

Other synonyms of obituary include obit.

obituary (noun)	necrology (noun)
a notice of someone's death; usually includes a short biography	a notice of someone's death; usually includes a short biography
	a list of people who died recently