veil vs unveil

veil is a noun but unveil is not a noun.

Word	Noun	Adjective	Verb	Adverb
veil	Yes	No	Yes	No
unveil	No	No	Yes	No

veil (noun)	unveil (noun)
a garment that covers the head and face
a vestment worn by a priest at High Mass in the Roman Catholic Church; a silk shawl
the inner membrane of embryos in higher vertebrates (especially when covering the head at birth)
a membranous covering attached to the immature fruiting body of certain mushrooms

veil (verb)	unveil (verb)
make undecipherable or imperceptible by obscuring or concealing	remove the veil from
to obscure, or conceal with or as if with a veil	remove the cover from
	make manifest