Perhaps Noun is the first lessons for many learners of English language. There must something fundamental about this . Anyway, a noun is a word used to name a person, animal, place, thing, and abstract idea. Nouns are usually the first words which small children learn. Noun can be countable or uncountable noun . A noun can function in a sentence as a subject, a direct object, an indirect object, a subject complement, an object complement, an appositive, an adjective or an adverb.