While the simple answer to some is a “sticker”, those in the industrial space, like TLP, consider this a more complex question to address. At the most basic level, yes, a pressure sensitive (PS) label is a sticker. A material with an adhesive back requiring PRESSURE to be applied to another surface. But to the engineers behind the complex design of industrial labels… sticker is a four-letter word.
Check out this post for a full explanation of a pressure sensitive label construction.