This is tilting at windmills I know, but maybe someone out there will be helped by knowing which are the most common woodworking misspellings here on rec.woodworking and elsewhere. Feel free to chime in with your favorites as well.
Loose means a thing that is not tight. Lose is misplacing something.
Joiner is someone who joins (wood, clubs, whatever) Jointer is that tool that flattens a face and an edge of a board
Planner is one of those books with a yearly calendar, or a person who plans. Planer is a tool to make 2 faces of a board parallel.
Ah, I feel better now haveing gotten that off my cheast (sic).