What are the words that can't exist without their prefix or suffix? [duplicate]
Solution 1:
These words are called "bound morphemes."
See http://en.wikipedia.org/wiki/Morpheme:
In linguistics, a morpheme is the smallest conceptual meaningful component of a word, or other linguistic unit, that has semantic meaning... a morpheme may or may not stand alone... A morpheme is free if it can stand alone (ex: "lie", "cake"), or bound if it is used exclusively alongside a free morpheme (ex: "im" in impossible).