Prefixes and Suffixes, The Basics By Joan Whetzel Words are categorized by the way they are used in grammar and as parts of speech. The word types are: verbs, nouns, pronouns, adverbs, adjectives, prepositions, interjections, and conjunctions. Words have roots, which give them their basic meaning. Yet, there are ways to tweak those words to give them new meanings - by adding prefixes and suffixs.
The Secret Life of Pronouns: What Our Words Say About Us. "A fascinating look at what Pennebaker’s groundbreaking research in computational linguistics reveals about our emotions, our sense of self, and our perception of our belonging in society." This also links to The 11 Best Psychology and Philosophy Books of 2011 by Maria Popova on brainpickings.org