This is the 3483rd most frequent Spanish word.
expulsión
Expulsion; the act of forcing someone or something to leave a place.
Here, 'expulsión' refers to the act of emitting or releasing gases, used in a biological or natural context.
La expulsión de gases es un proceso natural del cuerpo.
The expulsion of gases is a natural process of the body.
In this sentence, 'expulsión' denotes the act of being removed or disqualified from a game as a penalty.
El jugador recibió una tarjeta roja y su expulsión del juego fue inmediata.
The player received a red card and his expulsion from the game was immediate.
Here, 'expulsión' is used to indicate the act of officially removing someone from a group or organization due to misconduct.