Use the Print Screen key. This copies the entire desktop to the clipboard (CTRL + Print Screen copies just the active window). From there you can paste the image into any image editor (such as Microsoft Paint) and save the image as a bitmap. Finally, drag and drop the saved bitmap into Microsoft Word.

a bitmap is made up of individual squares

The Bitmap Brothers was created in 1987.

You can not enlarge bitmap images without losing quality and bitmap images are larger in size then vector.

A Bitmap is a file you can save pictures as like JPEG or PNG, in photoshop it means save the picture as a bitmap