disorientation vs hallucination

disorientation and hallucination both are nouns.

Word	Noun	Adjective	Verb	Adverb
disorientation	Yes	No	No	No
hallucination	Yes	No	No	No

As nouns, hallucination is a hypernym of disorientation; that is, hallucination is a word with a broader meaning than disorientation:

disorientation: a wild delusion (especially one induced by a hallucinogenic drug)
hallucination: a mistaken or unfounded opinion or idea

Other hypernyms of disorientation include delusion.

disorientation (noun)	hallucination (noun)
a wild delusion (especially one induced by a hallucinogenic drug)	a mistaken or unfounded opinion or idea
confusion (usually transient) about where you are and how to proceed; uncertainty as to direction	an object perceived during a hallucinatory episode
	illusory perception; a common symptom of severe mental disorder