Words

More and more I have noticed how people tend to arbitrarily interchange words. Personally, I find it quite painful to read. (maybe it's the old age catching up on me. lol)
Well, seeing as we learn everyday, I have taken the liberty to put down my two cents.

Here are a few words which contrary to seemingly popular belief, ARE NOT interchangeable. (This list by the way is by no means exhaustive)

• Leave - Live
• Being - Been
• Of - Off
• Does - Those
• This - These
• Sow - Sew
• Heard - Had
• Reap - Rip
• Their - There 
• You're - Your
• Steal - Still
• One's - Once
• He's - His
• Cause - Course

Also, there are words which have no plural. Again the list below is by no means exhaustive.

• Luggage
• Staff
• Guest
• Stuff
• Data
• Acne
• Vegetable
• Criticism
• Flock
• Stock

I'm hoping that I have been of help to some. That's my christian charity done for the day. Hehehehe...