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"Month" is a noun which is often translated as "el mes", and "of" is a preposition which is often translated as "de". Learn more about the difference between "month" and "of" below.
month()
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
of()
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
