An adjective is a part of grammar which describes, identifies, or quantifies a noun or pronoun. Basically, the primary function is to modify a noun or pronoun so that it will give more specific and interesting description. Instead of one word, a group of words with a subject and a verb can also function as an adjective.
As a part of speech, modifiers provide more information about a person, place, or thing. When an adjective is used, the meaning of the noun is enhanced. Adjectives are generally placed before a noun. An adjective can be used to qualify or modify a noun.