- sheepskin, fleece - tanned skin of a sheep with the fleece left on; used for clothing
--1 is a kind of leather
--1 has particulars: Golden Fleece - parchment, sheepskin, lambskin - skin of a sheep or goat prepared for writing on
--2 is a kind of animal skin
--2 has particulars: vellum - diploma, sheepskin - a document certifying the successful completion of a course of study
--3 is a kind of certificate, certification, credential, credentials
--3 has particulars: Higher National Diploma, HND