zoopsia vs visual hallucination

zoopsia and visual hallucination both are nouns.

Word	Noun	Adjective	Verb	Adverb
zoopsia	Yes	No	No	No
visual hallucination	Yes	No	No	No

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

zoopsia: visual hallucination of animals; sometimes occurring in delirium tremens
visual hallucination: illusory visual perception

zoopsia (noun)	visual hallucination (noun)
visual hallucination of animals; sometimes occurring in delirium tremens	illusory visual perception