In Word, you can make your text bold in three ways: use the Bold button on the Mini toolbar, use the Bold button on the Home tab, or use the keyboard shortcut.
Make text bold
Select the text that you want to make bold, and do one of the following:
Move your pointer to the Mini toolbar above your selection and click Bold .
Click Bold in the Font group on the Home tab.
Type the keyboard shortcut: CTRL+B.
Note: Click Bold or type the keyboard shortcut again to unbold the text that you selected.