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"Una" is a form of "una", a noun which is often translated as "one". "Dos veces a la semana" is a phrase which is often translated as "twice a week". Learn more about the difference between "una" and "dos veces a la semana" below.
la una(
oo
-
nah
)
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
feminine noun
a. one
Es la una de la tarde.It's one in the afternoon.
b. one o'clock
Tengo una cita a la una.I have an appointment at one o'clock.
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A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. twice a week
Marisa va al gimnasio dos veces a la semana.Marisa goes to the gym twice a week.
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