detonating device vs detonator

detonating device and detonator both are nouns.

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

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

detonating device and detonator: 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 detonating device include cap.

detonating device (noun)	detonator (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