Definition Noun Clause

Definition noun clause:       

-A dependent clause that functions as a noun (that is, as a subject, object, or complement) with in a sentence. Also known as a nominal clause.

-A noun is the name of any person,or place. In English grammar, a clause is a group of words containing a subject and predicate and functioning as a member of a complex sentence.
Predicate is the part of a sentence or clause that expresses what is said of the subject and that usually consists of a verb with or without objects, complements, or adverbial modifiers. 

-A noun clause does the work of a noun in a sentence or phrase. It is a group of words containing a subject and a finite verb of its own.

-Some Rules: noun clauses usually begin with words like how, why, what, where, when, who, that, which, whose, whether, etc. Also words like whoever, whenever, whatever and wherever.