night blindness vs visual defect

night blindness and visual defect both are nouns.

Word	Noun	Adjective	Verb	Adverb
night blindness	Yes	No	No	No
visual defect	Yes	No	No	No

As nouns, visual defect is a hypernym of night blindness; that is, visual defect is a word with a broader meaning than night blindness:

night blindness: inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
visual defect: impairment of the sense of sight

Other hypernyms of night blindness include avitaminosis, hypovitaminosis, vision defect, visual disorder, visual impairment.

night blindness (noun)	visual defect (noun)
inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder	impairment of the sense of sight

night blindness vs visual defect

night blindness and visual defect both are nouns.

Words related to "night blindness"

Words related to "visual defect"