A Parts of Speech Round-Up

While I've written plenty about the various parts of speech, I'd not thought to specify a list of them. Recently, however, I've noticed that a fair amount of you folks have wandered by in search of information about one or more of those topics. In order to facilitate your finding those posts, I thought I'd gather the basic information here. Tomorrow, I'll post about the next step: what makes a sentence?

Nouns
Verbs
Pronouns
Adjectives
Adverbs
Prepositions
Conjunctions
Interjections!