As nouns the difference between parchments and vellum
is that parchments is plural of lang=en while vellum is a type of parchment paper made from the skin of a lamb, baby goat, or calf.
vellum
English
Noun
(
en noun)
A type of parchment paper made from the skin of a lamb, baby goat, or calf.
A writing paper of very high quality.
See also
* bookfell
* parchment