trigger vs device

trigger and device both are nouns.

Word	Noun	Adjective	Verb	Adverb
trigger	Yes	No	Yes	No
device	Yes	No	No	No

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

trigger (noun)	device (noun)
an act that sets in motion some course of events	any clever maneuver
lever that activates the firing mechanism of a gun	an instrumentality invented for a particular purpose
a device that activates or releases or causes something to happen	an emblematic design (especially in heraldry)
	any ornamental pattern or design (as in embroidery)
	something in an artistic work designed to achieve a particular effect

trigger (verb)	device (verb)
release or pull the trigger on
put in motion or move to act