Congenital anomaly and Colour blindness

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

Colour blindness and congenital anomaly are semantically related. In some cases you can replace phrase "Colour blindness" with "Congenital anomaly", this phrases are similar.

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

Congenital anomaly and colour blindness are semantically related. Sometimes you can use "Congenital anomaly" instead a noun phrase "Colour blindness".