Noun Clause

Definition Noun Clause : A dependent clause that functions as a noun (that is, as a subject, object or complement) within a sentence . Also known as a nominal clause.
Two common types of noun clause in English are that-clauses and wh-clauses:

that-clause : I believe that everything happens for a reason.
wh-clause : How do i know what i think, until i see what i say ?

Examples and Observations:

"How we remember, what we remember, and why we remember form the most personal map of our individuality. 

noun clause starters "We use various words to start noun clauses. . . . "These words include the word that, which in its role as a noun clause starter is not relative pronouns , for it serves no grammatical role in the clause; it just starts the clause. For example: The committee stated that it would follow the agent's policy. Here the noun clause serves the noun role of direct object of thetrasitive verb started. But a careful look at the clause reveals that the word that does not serve any role within the clause, other than simply to get it going.

      In the first sentence the group of words ‘to get a prize’ does not have a subject and a predicate.
This group of word does the work of a noun.
Where as in the second sentence, the group of words ‘that he would get a prize’ has both a subject and a predicate.
Here this group of words does the work of a noun. This is a clause.
This clause is the object of the verb EXPECT and so does the work of a noun.
Since this group of words does the works of both a noun and a clause, it is called NOUN-CLAUSE.