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"Dónde" is a form of "dónde", an adverb which is often translated as "where". "Comprar" is a transitive verb which is often translated as "to buy". Learn more about the difference between "comprar" and "dónde" below.
comprar(
kohm
-
prahr
)A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
1. (to acquire)
a. to buy
¡Hay que comprar una piñata que hoy comienzan las posadas!We need to buy a piñata because the Posadas start today!
2. (to bribe)
a. to buy off
Los políticos malvados intentaron comprar mi silencio.The evil politicians tried to buy me off.
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
dónde(
dohn
-
deh
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
a. where
¿Dónde quieren construir el edificio los arquitectos?Where do the architects want to build the building?
2. (colloquial) (in questions) (Latin America)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
Regionalism used in Latin America: all the countries in South America, Central America, and the Caribbean. Does not include Spain.
a. how
¿Dónde iba a saber que cambiaste de opinión si no me lo dijiste?How was I to know that you'd changed your mind if you didn't tell me?