colour blindness vs color vision deficiency

colour blindness and color vision deficiency both are nouns.

Word	Noun	Adjective	Verb	Adverb
colour blindness	Yes	No	No	No
color vision deficiency	Yes	No	No	No

As nouns, colour blindness and color vision deficiency are synonyms defined as:

colour blindness and color vision deficiency: genetic inability to distinguish differences in hue

Other synonyms of colour blindness include color blindness, colour vision deficiency.

colour blindness (noun)	color vision deficiency (noun)
genetic inability to distinguish differences in hue	genetic inability to distinguish differences in hue