Yuri (百合), from "lily" in Japanese, is a genre that focuses on romantic, emotional, or sexual relationships between female characters. It can be used as an umbrella term for stories that range from friendship with deep emotional bonding to explicit physical romance.
For me, "[...] Yuri is any story with lesbian themes. That is because Yuri can describe any anime or manga series (or other derivative media, i.e., fan fiction, film, etc.) that shows intense emotional connection, romantic love or physical desire between women. Yuri is not a genre confined by the gender or age of the audience, but by the perception of the audience." - Yuricon
This section in particular was created with the aim of demonstrating that the prejudices surrounding the yuri/GL genre are unfounded. Especially on social media, there is a tendency to believe that these works are set exclusively in high school or that they tell only wholesome love stories. The goal is to show that the yuri genre is diverse and multifaceted and there could be a story for everyone.
I know the terms "butch," "masc," and "tomboy" all have different meanings, but for the purpose of this list they're all grouped together in the same tag.