Exocarp and Vellum

Exocarp noun - Outermost layer of the pericarp of fruits as the skin of a peach or grape.

Vellum and exocarp are semantically related. In some cases you can use "Vellum" instead a noun "Exocarp".

Vellum noun - Fine parchment prepared from the skin of a young animal e.g. a calf or lamb.

Exocarp and vellum are semantically related. Sometimes you can use "Exocarp" instead a noun "Vellum".