Linguistic Usage Notes

I will keep a list of particular stylistic notes and errors here that crop up regularly in student writing. 

Do not be tempted by a twenty-dollar word when there is a ten-center handy, ready and able. … If you admire fancy words, if every sky is beauteous, … every intelligent child prodigious, if you are tickled by discombobulate, you will have a bad time with Reminder 14. What is wrong, you ask, with beauteous? No one knows, for sure. There is nothing wrong, really, with any word — all are good, but some are better than others. A matter of ear, a matter of reading the books that sharpen the ear.

— Reminder 14 from E.B. White's supplement to Oliver Strunk's Elements of Style

5. "effect" vs. "affect" (as verbs):