guidance device vs JDAM

guidance device and JDAM both are nouns.

Word	Noun	Adjective	Verb	Adverb
guidance device	Yes	No	No	No
JDAM	Yes	No	No	No

As nouns, JDAM is a hyponym of guidance device; that is, JDAM is a word with a more specific, narrower meaning than guidance device:

guidance device: a system of equipment for automatically guiding the path of a vehicle (especially a missile)
JDAM: a pinpoint bomb guidance device that can be strapped to a gravity bomb thus converting dumb bombs into smart bombs

Other hyponyms of guidance device include Joint Direct Attack Munition.

guidance device (noun)	JDAM (noun)
a system of equipment for automatically guiding the path of a vehicle (especially a missile)	a pinpoint bomb guidance device that can be strapped to a gravity bomb thus converting dumb bombs into smart bombs