This is the 596th most frequent Spanish word.
costa
"Coast" or "shore."
Here, 'costa' refers to the geographical location bordering the sea.
La costa fue el destino de nuestras vacaciones.
The coast was the destination of our vacation.
In this sentence, 'costó' is derived from the verb 'costar' and means to require an amount of effort or resources.
Llegar a tiempo a la reunión me costó mucho esfuerzo.
Getting to the meeting on time cost me a lot of effort.
Although 'costo' is used here, it stems from the same root as 'costa,' emphasizing an expenditure or required quantity, often in financial terms.