colour vision deficiency vs colour blindness

colour vision deficiency and colour blindness both are nouns.

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

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

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

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

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