Joiner

A milk boy, passing on his way to the dairy, happened to walk down the lane which leads from the mews at the back of the hotel. He noticed that a ladder, which usually lay there, was raised against one of the windows of the second floor, which was wide open. After passing, he looked back and saw a man descend the ladder. He came down so quietly and openly that the boy imagined him to be some carpenter or joiner at work in the hotel.

Tom is a joiner.

My uncle lent the joiner five shillings.

My aunt lent the joiner five shillings.

Are you a joiner?

Tom isn't a joiner. He is a carpenter.

The zero-width joiner (ZWJ) has a code point but no corresponding symbol. It is used to connect two or more other Unicode code points to create a new "compound character" with a unique glyph all its own. […] I'm making a point of mentioning Ninja Cat because it is another example of the use of zero-width joiners.

I am not a joiner. I am reluctant to sign up as a member of any organization, because I generally can't find myself or my ideas in it.