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"Hola" is a form of "hola", an interjection which is often translated as "hello". "Cielo" is a noun which is often translated as "sky". Learn more about the difference between "cielo" and "hola" below.
el cielo()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
1. (firmament)
2. (religious)
4. (darling)
a. angel
Mi primo es un cielo; siempre quiere ayudar.My cousin is an angel; he's always eager to help.
5. (anatomy)
hola
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
1. (general)
b. hi (colloquial)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
¡Hola! ¿Qué hay de nuevo?Hi! What's new?