James Madison's wife, Dolley, was a famous first lady.
An appositive phrase is a group of words that includes an appositive and other words that modify the appositive.
Madison, our fourth president,
I have learned a bunch of stuff from DLR. You learn correct punctuation.It helps you learn what punctuation to use at the right time. It also teaches capitalization practice. For example you have to capitalize your name whatever it may be.
Concrete and Abstract Nouns
Abstract nouns name ideas, qualities, and feelings.
A desk is an example of a concrete noun.
A thought of courage is an example of an abstract noun.