vaporiser vs device

vaporiser and device both are nouns.

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

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

vaporiser: a device that puts out a substance in the form of a vapor (especially for medicinal inhalation)
device: an instrumentality invented for a particular purpose

vaporiser (noun)	device (noun)
a device that puts out a substance in the form of a vapor (especially for medicinal inhalation)	any clever maneuver
	an instrumentality invented for a particular purpose
	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