This is the 518th most frequent Spanish word.
comprar
To buy.
The verb 'comprar' is used here in its infinitive form to indicate the action of purchasing in a general sense.
Quiero comprar un libro en la librería.
I want to buy a book at the bookstore.
The verb 'comprar' is conjugated in the past tense here to specifically describe the act of purchase that occurred in the past.
Ayer compré una computadora nueva.
Yesterday I bought a new computer.
Here, the verb 'comprar' is used in a question to inquire about the possibility or location of purchasing.