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"Day of the week" is a noun which is often translated as "el día de la semana", and "Monday" is a proper noun which is often translated as "el lunes". Learn more about the difference between "day of the week" and "Monday" below.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
1. (general)
a. el día de la semana (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).
I just learned the days of the week in my Spanish class.Acabo de aprender los días de la semana en mi clase de español.
A proper noun refers to the name of a person, place, or thing.