What are the two general classification of adjective?
limiting and descriptive
Classification can be used either as a noun or an adjective. "The classification of the leaf was found in the book" is a sentence using classification as a noun. It functions as the subject in the sentence. "The scientific classification system can be remembered with the acronym KPCOFGS" is a sentence using classification as an adjective that describes system. Many nouns can double over as adjectives.