Stack overflow has a tag for put with over two thousand questions and a description that reads:
PUT is a HTTP method which requests that the enclosed entity be stored under the supplied URL.
It also has a tag for http-put with about two hundred questions and a description that reads:
HTTP PUT Uploads a representation of the specified resource.
It seems to refer to the RESTful semantics of a PUT request, but essentially, both tags refer to the same thing - the HTTP PUT method.
I don't have the score in either tag to suggest them as synonyms, so I'm bringing this up in MSO.