detonator vs detonating device

detonator and detonating device both are nouns.

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

As nouns, detonator and detonating device are synonyms defined as:

detonator and detonating device: a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive

Other synonyms of detonator include cap.

detonator (noun)	detonating 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	a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive