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"I'm" is a contraction which is often translated as "soy", and "yes" is an interjection which is often translated as "sí". Learn more about the difference between "I'm" and "yes" below.
I'm()
A contraction is a shortened form of a word or group of words made by omitting a sound or letter (e.g., don't).
yes()
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).