improvised explosive device vs IED

improvised explosive device and IED both are nouns.

Word	Noun	Adjective	Verb	Adverb
improvised explosive device	Yes	No	No	No
IED	Yes	No	No	No

As nouns, improvised explosive device and IED are synonyms defined as:

improvised explosive device and IED: an explosive device that is improvised

Other synonyms of improvised explosive device include I.E.D..

improvised explosive device (noun)	IED (noun)
an explosive device that is improvised	an explosive device that is improvised