Colour blindness and Congenital defect

Colour blindness noun - Genetic inability to distinguish differences in hue.

Congenital defect and colour blindness are semantically related. In some cases you can use "Congenital defect" instead a noun phrase "Colour blindness".

Congenital defect noun - A defect that is present at birth.

Colour blindness and congenital defect are semantically related. Sometimes you can replace phrase "Colour blindness" with "Congenital defect", this phrases are similar.