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"It's" is a form of "it's", a contraction which is often translated as "es". "Noun" is a noun which is often translated as "el sustantivo". Learn more about the difference between "it's" and "noun" below.
it's(
ihts
)A contraction is a shortened form of a word or group of words made by omitting a sound or letter (e.g., don't).
noun(
naun
)A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
1. (grammar)
a. el sustantivo (M)
(m) means that a noun is masculine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
The noun must agree with the verb in number.El sustantivo debe concordar con el verbo en número.