body bag vs human remains pouch

body bag and human remains pouch both are nouns.

Word	Noun	Adjective	Verb	Adverb
body bag	Yes	No	No	No
human remains pouch	Yes	No	No	No

As nouns, body bag and human remains pouch are synonyms defined as:

body bag and human remains pouch: a bag in which the body of a dead soldier is placed

Other synonyms of body bag include personnel pouch.

body bag (noun)	human remains pouch (noun)
a bag in which the body of a dead soldier is placed	a bag in which the body of a dead soldier is placed