When a group of letters with a special meaning appears in front of a word
it is called a prefix
When a group of letters with a special meaning appears at the end of a word
it is called a suffix
The root (or stem) is the basic part of word
We add prefixes or suffixes to root to create new word
Look at the word introspective
The root spect means "look"
The prefix intro means "within" or "inward"
The suffix ive means "to tend to" or " to lean toward