adjective, green·er, green·est. of the color of growing foliage, between yellow and blue in the spectrum: green leaves. covered with herbage or foliage; verdant: green fields. characterized by the presence of verdure.

Is greenness a noun?

greenness noun [U] (LACK OF EXPERIENCE)

Is greenish a noun or adjective?

Adjective. greenish \ ˈgrē-​nish \ adjective. greenishness noun.