(1), (2) and (3) are all noun clauses. "Noun clause" is a perfectly good term.

Here's the proof:

In grammar, a content clause is a subordinate clause that provides content implied or commented upon by its main clause. The term was coined by Otto Jespersen. They are also known as "noun clauses".

You clearly know very little about English grammar, as is evident from the fact that you don't even know the difference between a noun phrase and a clause!

I'd explain why you're wrong, but judging by the above and your past replies on this site, I doubt if you'd understand a word I said.

The only accurate bit in your reply is that Otto Jesperson was responsible for the term 'content clause'. Note that he could have, but didn't, use the term 'noun clause', a misnomer if ever there was one.




PaulM

Yes, you’re right. (3) is a noun phrase. My mistake.