Everyone can play poker, but not everyone can understand and have the skills to process cards to be able to win in a poker game session.
It takes quite a long time if you want to really master the game of poker, and even then you can't really say you are an expert because for every skill or prowess in playing there are other gamblers who are more experienced and more powerful.
But poker terminology like this is definitely understood by poker game experts, it's just that we might be a little lazy if we have to study and understand it because it's a little boring and easier in slot games that don't need understanding and waiting for luck to come to win.