coroner vs medical examiner

coroner and medical examiner both are nouns.

Word	Noun	Adjective	Verb	Adverb
coroner	Yes	No	No	No
medical examiner	Yes	No	No	No

As nouns, coroner and medical examiner are synonyms defined as:

coroner and medical examiner: a public official who investigates by inquest any death not due to natural causes

coroner (noun)	medical examiner (noun)
a public official who investigates by inquest any death not due to natural causes	a public official who investigates by inquest any death not due to natural causes