photalgia vs hurting

photalgia and hurting both are nouns.

Word	Noun	Adjective	Verb	Adverb
photalgia	Yes	No	No	No
hurting	Yes	No	No	No

As nouns, hurting is a hypernym of photalgia; that is, hurting is a word with a broader meaning than photalgia:

photalgia: pain in the eye resulting from exposure to bright light (often associated with albinism)
hurting: a symptom of some physical hurt or disorder

Other hypernyms of photalgia include pain.

photalgia (noun)	hurting (noun)
pain in the eye resulting from exposure to bright light (often associated with albinism)	a symptom of some physical hurt or disorder