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"Their" is an adjective which is often translated as "su", and "its own" is a phrase which is often translated as "su propio". Learn more about the difference between "their" and "its own" below.
their()
An adjective is a word that describes a noun (e.g., the big dog).
1. (possessive)
its own()
A phrase is a group of words commonly used together (e.g., once upon a time).
