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"Also" is an adverb which is often translated as "también", and "besides" is a preposition which is often translated as "además de". Learn more about the difference between "also" and "besides" below.
also(
al
-
so
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g. to run quickly, very tired).
1. (too)
a. también
The suspects are also believed to have attacked a second person that night.Se cree que los sospechosos también atacaron a una segunda persona aquella noche.
2. (moreover)
a. además
I should say also that I'm going to need to take a few personal days.Debería decir además que voy a necesitar tomar algunos días personales.
besides(
bi
-
saydz
)A preposition is a word that indicates the relationship between a noun and another word (e.g. He ran through the door.).
1. (apart from)
2. (in addition to)
a. además de
Besides the toiletries, I have to buy a new bathing suit for the trip.Además de los artículos de tocador, tengo que comprar un nuevo traje de baño para el viaje.