This is the 291st most frequent Spanish word.
llegada
The act of arriving.
In this sentence, 'llegada' is used as a noun to refer to the event of the train's arrival.
La llegada del tren fue puntual.
The arrival of the train was on time.
Here, 'llegada' signifies the act of someone arriving, emphasizing the event of their appearance.
Celebramos su llegada con una fiesta.
We celebrated their arrival with a party.
For this case, 'llegada' metaphorically relates to the transition or occurrence of a season coming into being.