Albuminoid and Keratin

Albuminoid noun - A simple protein found in horny and cartilaginous tissues and in the lens of the eye.

Keratin and albuminoid are semantically related. In some cases you can replace term "Keratin" with "Albuminoid", this nouns are similar.

Keratin noun - A fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves.

Albuminoid and keratin are semantically related. You can use "Albuminoid" instead a noun "Keratin".