....and endings with bishops of opposite color.
In his Internet Chess Club commentary, GM Har-Zvi mentioned the famous Flohr-Bothvinnik game from the 1955 Soviet Championship as a wonderful example of the principles behind opposite-color bishop endings. It's not so important who has more pawns; it's more important to have more than one threat, ideally on opposite sides of the board.
Flohr-Botvinnik, USSR (ch), 1955
Black to play and win