Diction for Grammar and Writing Students
Diction deals with wrong words, confusable words, and the "that's just not how we say it" issue. Here are some great pages to help.
The largest list of all
A truly enormous list
A brief summation of some biggies
Wrong Word Errors and Exercises (If you log in)
Another thorough listing
Homographs: Look alikes pronounced differently.
Read Henry Potty and the Pet Rock: The Unauthorized Harry Potter Parody