itchiness vs haptic sensation

itchiness and haptic sensation both are nouns.

Word	Noun	Adjective	Verb	Adverb
itchiness	Yes	No	No	No
haptic sensation	Yes	No	No	No

As nouns, haptic sensation is a hypernym of itchiness; that is, haptic sensation is a word with a broader meaning than itchiness:

itchiness: an irritating cutaneous sensation that produces a desire to scratch
haptic sensation: a sensation localized on the skin

Other hypernyms of itchiness include cutaneous sensation, skin sensation.

itchiness (noun)	haptic sensation (noun)
an irritating cutaneous sensation that produces a desire to scratch	a sensation localized on the skin