library paste - an edible white thick paste (not like the white glue we use today) with a stiff brush that went through the cap. It was edible. Well, maybe not, but we all ate it anyway.
typewriter ball - used in a Selectric IBM typewriter, it moved across the page as you typed, and contained the letter characters. To change fonts, you put in a different ball.
word processor - a standalone machine dedicated to word processing.