human remains pouch vs body bag

human remains pouch and body bag both are nouns.

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

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

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

Other synonyms of human remains pouch include personnel pouch.

human remains pouch (noun)	body bag (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