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"Exactamente" is an adverb which is often translated as "exactly", and "éxito" is a noun which is often translated as "success". Learn more about the difference between "exactamente" and "éxito" below.
exactamente()
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
el éxito()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).