The word “color” is primarily used as a noun.
As a noun, “color” refers to the characteristic of visual perception described through color names such as red, blue, yellow, etc. For example, in the sentence “The color of the sky is blue,” the word “color” serves as a subject, highlighting what is being discussed.
In some contexts, “color” can also function as a verb, meaning to add or apply color. For instance, in the sentence “She loves to color in her coloring book,” the word “color” describes the action of applying colors.
So, while “color” is commonly a noun, it can also be used as a verb depending on the context of the sentence.