Learn your damn homophones.
Affect
Your horrendous grammar affects the quality of your input as an interlocutor.
Effect
Your grammar’s effects are so unspeakable that you should be prosecuted at The Hague.
Capital
Capital punishment should be applied to people who use improper grammar.
Capitol
Improper grammar is not allowed inside the capitol.
Discreet
If you can’t discern the difference between homophones, then be discreet.
Discrete
There is a discrete difference between someone who knows homophones and someone who does not.
and many, many, more.
