vs 

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"Buenas noches" is a form of "buenas noches", a phrase which is often translated as "good evening". "Buenos días" is a phrase which is often translated as "good morning". Learn more about the difference between "buenos días" and "buenas noches" below.
buenos días(
bweh
-
nohs
 
dee
-
ahs
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. good morning
¡Buenos días a todos!Good morning everybody!
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buenas noches(
bweh
-
nahs
 
noh
-
chehs
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. good evening
Buenas noches y bienvenidos.Good evening and welcome.
a. good night
Me voy a dormir. ¡Buenas noches!I'm going to sleep. Good night!
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