What means Gameplay and Playability?

Wait, isn't the same thing?

In fact, there are many studies on this case and we still haven't a concrete definition. Not joking. This means that anyone can interpret the meaning of this words any way they want.

But in order to establish a joint opinion, it would be interesting if we started thinking the same way, stipulating a meaning. For that, of course, we need to have a solid foundation in our arguments.
I'm not saying this classification is the best way, but, i believe it's interesting to consider.

I share in parts with the interpretation of Sato and Cardoso¹, Aguiar and Battaiola², and Rouse III³. From them, i could form the idea that:

• Gameplay: sums up to the game itself. Explaining better, is all parts of the game (graphics, programming, music, animation, plot, etc.) interacting with each other and all parts of the game interacting with the player. The word that stands out here is the interaction (Rouse III, 2001), because without it the game simply does not happen. After all, what differentiates video games from other types of art is precisely the direct interaction with them.
• Playability: results from the gameplay, because playability is the physical ability (motor coordination, reflexes ...) and mental (interpretation, quick and logical reasoning, etc.) that the player has to play the game. This is only possible through the interaction of the player with the game (gameplay).

And since the subject allows:

• Game Experience: it's something subjective from the player's playability, because it comes from the way the same interacts with the game. For example, if the player cannot handle some game mechanics and he is not able to learn how to solve the situation, he will probably have a bad gaming experience. However, if the same has this capability (which may just be a matter of patience, or something like), maybe he has a bad experience at first, but after that overcome his difficulty will have a good gaming experience. So it is something subjective to the player because it is the result of the way he deals with the game. By the way, this item was part of the theme of my latest scientific article: "Game Design and Experience in Digital Games: Analysis of the game ' Miner Ultra Adventures '", in which was analyzed (along with my mentor, Fabiano N. de Oliveira) about how the Experience of the game influences the player's assessment about the same.

It is possible that you ask:  "But then why do YouTubers 'gamers' always put the word ' gameplay ' in their videos? ". This is because the term playability would be very strange in this case, not only by the word itself, but also because the playability demonstrated in the video is exclusive from the YouTuber, while with the viewer is probably quite different. That's why some gamers put "let's play" instead of "gameplay", probably because they've already seen somewhere that word doesn't mean what they're proposing. But despite this, as it is a term that is not yet ruled and has been used in videos for several years, particularly i don't see any problem in using it in this sense also, even because if the intention of the video is indeed to show the gameplay of the game and not the YouTuber's abilities, so the term is being used correctly.

References:

[1] SATO, Adriana Kei Ohashi; CARDOSO, Marcos Vinicius. Além do gênero: uma possibilidade para a classificação de jogos. Sbc: Proceedings of SBGames, Belo Horizonte, p.54-63, 10-12 nov. 2008. Anual. VII SBGames. Disponível em: <http://www.sbgames.org/papers/sbgames08/ad/papers/p08.pdf>. Acesso em: 10 ago. 2018.

[2] AGUIAR, Michelle; BATTAIOLA, André Luiz. Gameplay: uma definição consensual à luz da literatura. Sbc: Proceedings of SBGames 2016, São Paulo, p.531-538, 8-10 set. 2016. Anual. XV SBGames. Disponível em: <http://www.sbgames.org/sbgames2016/downloads/anais/157561.pdf>. Acesso em: 10 ago. 2018.

[3] ROUSE III, Richard. Game Design Theory & Practice. Los Rios Boulevard (USA): Wordware Publishing, 2001. 584 p.