This is the 731st most frequent Catalan word.
espera
"Espera" in Catalan means "wait" or "expectation."
In this sentence, 'espera' is a noun and refers to the act or period of waiting, specifically at the airport.
L'espera a l'aeroport va ser molt llarga.
The wait at the airport was very long.
Here, 'espera' is a command (imperative form) addressed to 'you', asking someone to wait.
Espera un moment, ara mateix vinc.
Wait a moment, I'll be right there.
In this case, 'espera' is a verb conjugation in the third person singular form and means 'hopes' or 'is waiting' depending on context.