dildo vs vibrator

dildo and vibrator both are nouns.

Word	Noun	Adjective	Verb	Adverb
dildo	Yes	No	No	No
vibrator	Yes	No	No	No

As nouns, vibrator is a hypernym of dildo; that is, vibrator is a word with a broader meaning than dildo:

dildo: a vibrating device that substitutes for an erect penis to provide vaginal stimulation
vibrator: mechanical device that produces vibratory motion; used for massage

Other hypernyms of dildo include adult toy, sex toy.

dildo (noun)	vibrator (noun)
a vibrating device that substitutes for an erect penis to provide vaginal stimulation	mechanical device that produces vibratory motion; used for massage
	a mechanical device that vibrates