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"Vamos" is a form of "vamos", a phrase which is often translated as "let's go". "Nos" is a pronoun which is often translated as "us". Learn more about the difference between "vamos" and "nos" below.
vamos(
bah
-
mohs
)A phrase is a group of words commonly used together (e.g., once upon a time).
nos(
nohs
)A pronoun is a word that stands in for a noun (e.g., she).
b. us (indirect object)
Los estudiantes por fin nos devolvieron los libros.The students finally returned the books to us.
c. ourselves (reflexive)
Nos divertimos mucho en la excursión.We really enjoyed ourselves on the trip.
d. each other (reciprocal)
Cuando nos vemos, nos saludamos.When we see each other, we greet each other.