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"Lunes" is a noun which is often translated as "Monday", and "marzo" is a noun which is often translated as "March". Learn more about the difference between "lunes" and "marzo" below.
el lunes(
loo
-
nehs
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
el marzo(
mahr
-
soh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).