Friday puzzle -- Sounds like
A homonym or homophone is a word pronounced the same as another, but with a different meaning. Best example in English is probably the three homonyms "to", "too", and "two". Another three-way set is "there", "their", and "they're", although I'm not convinced that anyone on the internet knows the difference! ;-)
Can you think of a pair of homonyms that have opposite, not merely different, meanings? In other words, two people could hear a sentence with this word in it, and, absent any context, come to exactly opposite understandings of what the speaker meant.
