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"This one" is a phrase which is often translated as "este", and "him" is a pronoun which is often translated as "él". Learn more about the difference between "this one" and "him" below.
this one(
thihs
wuhn
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. este
He's written a lot of books, but this one is the best.Ha escrito muchos libros, pero este es el mejor.
I like that shirt, but they only have this one in my size.Me gusta esa camisa, pero solo tienen esta en mi talla.
him(
hihm
)A pronoun is a word that stands in for a noun (e.g., she).
1. (personal)