This article is from the Puzzles FAQ, by Chris Cole email@example.com and Matthew Daly firstname.lastname@example.org with numerous contributions by others.
List some phrases with the same meaning that differ by one sound.
The car caree(n/r)s down the road.
Can you (e/i)nsure that all is well?
We must inst(a/i)ll some discipline.
It's coming down the pi(p/k)e.
The sun pe(a/c)ked out from behind clouds.
-Patricia D. Cornwell, _All That Remains_, Avon, New York, 1993, p. 36
I've been ra(c)king my brain the whole time.
-Patricia D. Cornwell, _All That Remains_, Avon, New York, 1993, p. 231
Listen to the blabbing/babbling brook.