detonator vs explosive device

detonator and explosive device both are nouns.

Word	Noun	Adjective	Verb	Adverb
detonator	Yes	No	No	No
explosive device	Yes	No	No	No

As nouns, explosive device is a hypernym of detonator; that is, explosive device is a word with a broader meaning than detonator:

detonator: a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
explosive device: device that bursts with sudden violence from internal energy

detonator (noun)	explosive device (noun)
a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive	device that bursts with sudden violence from internal energy