There are many ambiguous words in the English language. ‘Renter’ is on the top of my list. Is a renter a tenant or a landlord? Suppose you say: “Max rents the house on the corner.” Is Max the tenant or is he the landlord? Does Max pay rent or does he receive rent? Google Dictionary defines ‘renter’ as ‘a person who rents an apartment, car, or other object. That definition doesn’t help. ‘A person who rents an apartment’ could be either a tenant or a landlord.

AUTOANTONYMS.‘Renter’ is an autoantonym. An autoantonym is a word that has 2 opposite definitions. In other words, the word is its own antonym. My Uncle Maurice got me interested in autoantonyms when I was a kid. He still likes them. Here are a few examples of autoantonyms.Clip can mean to attach or to detach. If you clip papers together, then you attach them, but if you clip an article from a newspaper, then you detach it. I remember this word was on Uncle Maurice’s list.
Dust can mean to remove dust or to add dust. If you dust your living room, you are removing dust, but if you dust donuts with powdered sugar, then you are adding dust.
Off can men to activate or to deactivate. ‘The dog set off the burglar alarm, so we turned the burglar alarm off.’
Oversight can mean failing to see mistakes or trying to find mistakes. ‘An oversight by the company’s CPA led to a million dollar loss. His oversight was discovered by the oversight committee.’
Table can mean to start a discussion or end a discussion. If you table a meeting, you are starting a discussion, but if you table a motion at the meeting, then you are removing it from discussion.
Trim can mean to add or to remove. What does it mean to ‘trim a tree?’ If you trim a Christmas tree, then you are adding decorations, but if you trim a tree in your backyard, you are removing unwanted branches.
There are dozens of other autoantonyms in the English language.