Once you're in a relationship it doesn't really matter much. These terms exist in a similar way to "goth" or "preppy" in that they basically just describe a vibe/aesthetic. They're mainly only used when describing one's "type"
Not related actually. Femmes are more feminine, butches are more masculine, and they both have an aesthetic. Also since this is lesbian terminology everything about everything about this is fiercely debated. Popular arguments include if one can be femme without dating butches (the inverse argument exists but is less common).
Right but bottoms are more feminine, tops more masculine, and both have clearly defined aesthetics too. Is the butch one also typically meant to play a more dominant role in the relationship?