Just choose bold in the font. Below I will demonstrate the detailed operation steps:

(computer model: MacBook Air, software version: Word 202 1)

1. Open Word and select the desired text in the box;

2. Click the inverted triangle on the right side of the font;

3. A light gray box will pop up and select the required bold style;

4. The bold and black font operation is completed!

The above is a tutorial on how to make fonts bold and black. I hope it helps you ~