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"Navidad" is a proper noun which is often translated as "Christmas", and "christmas" is a noun which is often translated as "Christmas card". Learn more about the difference between "Navidad" and "christmas" below.
la Navidad(
nah
-
bee
-
dahd
)A proper noun refers to the name of a person, place, or thing.
las Navidades
A plural noun indicates that there is more than one person, place, thing, or idea.
a. Christmas
Vamos a pasar las Navidades con mis suegros.We're going to spend Christmas with my in-laws.
el christmas(
krees
-
mahs
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. Christmas card
Fui al correo a enviar un christmas para mi hermana.I went to the post office to send a Christmas card for my sister.