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"Hoy" is an adverb which is often translated as "today", and "viernes" is a noun which is often translated as "Friday". Learn more about the difference between "hoy" and "viernes" below.
hoy()
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
2. (nowadays)
el viernes()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. Friday
A partir de ahora, se puede llevar ropa informal en el trabajo los viernes.From now on you can wear casual clothes to work every Friday.
