Pre and Re Mis and Dis: What is a Prefix: 1 (Words are CATegorical)

Pre- and Re-, Mis- and Dis-: What Is a Prefix? (Words Are CATegorical ®)

-Ful and -Less, -Er and -Ness: What Is a Suffix? (Words Are CATegorical ®)

I'm and Won't, They're and Don't: What's a Contraction? (Words Are CATegorical ®)