What part of speech is vermilion?

Vermilion can be categorized as a noun, a verb and an adjective.

Parts of speech

1. vermilion is a verb, present, 1st person singular of vermilion (infinitive).
2. vermilion is a verb (infinitive).
3. vermilion is a noun, singular of vermilions.
4. vermilion is an adjective.

Adjective
vermilion - of a vivid red to reddish-orange color
Verb
vermilion - color vermilion
Noun
vermilion - A vivid red synthetic pigment made of mercury sulfide .
vermilion - A vivid red or slightly orange colour.
vermilion - A type of red dye worn in the parting of the hair by married Hindu women.
vermilion - A red skin of the lip or its border with the skin of the face.