Learn English – this mop-like tool called in English

I call them "front steps". I live in Seattle.

My grandparents from Chicago would have called them a "front stoop".

My impression is that they are called a "stoop" in areas where row houses are common in big cities. This might be a coincidence: Etymonline says that this meaning of the word "stoop" is derived from Dutch. New York City was originally settled by the Dutch, and is at the center of the North American "areas where row houses are common in big cities."

Are you talking about a single piece of paper, that's not attached to a book? If so, don't use either "page" or "blank page", because a page is a sheet of paper bound inside a book. Technically, a page of paper is only one side of a sheet. If you wanted to talk about the sides of a single loose piece of paper, you'd just say the "side of the paper". Thus "page" is not used in the context of single pieces of paper.

You could use:

• (blank) sheet of paper
• (blank) piece of paper

And because "sheet" is so specific of a word, sometimes people drop "of paper" in "sheet of paper"

• (blank) sheet

I guess you could technically do the same with "piece of paper", but "piece" is too vague, so people don't usually drop "of paper".

P.S. Wikipedia tells me the technical term is a "leaf of paper", but nobody says that in daily use.