nebuliser vs airbrush

nebuliser and airbrush both are nouns.

Word	Noun	Adjective	Verb	Adverb
nebuliser	Yes	No	No	No
airbrush	Yes	No	Yes	No

As nouns, airbrush is a hyponym of nebuliser; that is, airbrush is a word with a more specific, narrower meaning than nebuliser:

nebuliser: a dispenser that turns a liquid (such as perfume) into a fine mist
airbrush: an atomizer to spray paint by means of compressed air

nebuliser (noun)	airbrush (noun)
a dispenser that turns a liquid (such as perfume) into a fine mist	an atomizer to spray paint by means of compressed air

nebuliser (verb)	airbrush (verb)
	paint with an airbrush