Can someone explain what a dependent clauses and noun clauses are?

A dependent clause is a group of words with a subject and a verb. It does not express a complete thought so it is not a sentence and can’t stand alone. These clauses include adverb clauses, adjective clauses and noun clauses ex- when the president arrives  like when is the dependent clasue

A noun clause is a dependent clause that acts as a noun. Noun clauses begin with words such as how, that, what, whatever, when, where, whether, which, whichever, who, whoever,

Dependant clauses are phrases that can't make sense on its own