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"La nochebuena" is a form of "nochebuena", a noun which is often translated as "poinsettia". "Las posadas" is a form of "posada", a noun which is often translated as "inn". Learn more about the difference between "la nochebuena" and "las posadas" below.
la nochebuena()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. poinsettia
Adornamos la casa por dentro y por fuera con nochebuenas en la temporada navideña.We decorate the house inside and out with poinsettias during the Christmas season.
la posada()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. inn
Tras cabalgar todo el día, se alojaron en una posada.After riding all day, they stayed at an inn.
las posadas
A plural noun indicates that there is more than one person, place, thing, or idea.
3. (nine-day Christmas festival celebrated between December 16th and 24th) (Mexico)
Regionalism used in Mexico
a. Posadas
Hay que ir al tianguis por una piñata porque mañana empiezan las posadas.We need to go to the market to get a piñata because the Posadas start tomorrow.