These lines are sometimes called horizontal rules and come in a number of different variations. Word lets you add simple lines, double lines, dotted lines, and jagged lines, for example.

There's not one, but two easy ways to insert a horizontal line into a Word document.

How do I put a line around a word in Word? With the Borders menu in Word, you can add a line around a word or other text. Select the text, go to the Home tab, and open the Borders menu.