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"Listo" is a form of "listo", an adjective which is often translated as "smart". "Pronto" is an adverb which is often translated as "soon". Learn more about the difference between "listo" and "pronto" below.
listo(
lees
-
toh
)An adjective is a word that describes a noun (e.g., the big dog).
2. (prepared)
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
4. (all right) (Latin America)
Regionalism used in Latin America: all the countries in South America, Central America, and the Caribbean. Does not include Spain.
pronto(
prohn
-
toh
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).