What is the difference between paper size and page margins in Word?

There is no difference, both are presets for how much content you can fit on a page.

Paper size refers to the outside area of the page that can be made bigger or smaller to fit content, while page margins are

the areas of the document where text is aligned.

Paper size refers to the size of the paper you will be printing your document on, while page margins refer to the outside

area of a page that can be made bigger or smaller to fit content

Paper size refers to the orientation of the page-for example, landscape or portrait-while page margins refer to the

outside area of a page that can be made bigger or smaller to fit content

Paper size refers to the outside area of the page that can be made bigger or smaller to fit content, while page margins are the areas of the document where text is aligned.

Explanation:

The paper size refers to a feature that allows to adjust the size of the page to be able to put all the content you need and according to the paper on which you intend to print the document.

The margin is the space that is between the text and the edge of the page and the text is aligned according to this.

Because of this, the difference between paper size and page margins in Word is that paper size refers to the outside area of the page that can be made bigger or smaller to fit content, while page margins are the areas of the document where text is aligned.