moon blindness vs nyctalopia

moon blindness and nyctalopia both are nouns.

Word	Noun	Adjective	Verb	Adverb
moon blindness	Yes	No	No	No
nyctalopia	Yes	No	No	No

As nouns, moon blindness and nyctalopia are synonyms defined as:

moon blindness and nyctalopia: inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder

Other synonyms of moon blindness include night blindness.

moon blindness (noun)	nyctalopia (noun)
recurrent eye inflammation in horses; sometimes resulting in blindness	inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder