Funny… Ironically, I perfectly understood what he meant, but not yours.
Most of the most commonly confused words in English are old pairs: affect and effect, or discrete and discreet.
But a new pair has developed in the last dozen or so years: segway and segue. You see it in informal writing,
and in constructions like "let me segway to a new topic."
moot and mute is getting a lot of traction, too