vs 

QUICK ANSWER
"Una" is a form of "una", a noun which is often translated as "one". "Andrés" is a proper noun which is often translated as "Andrew". Learn more about the difference between "una" and "Andrés" 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.
Copyright © 2025 Dictionary Media Group, Inc.
el Andrés(
ahn
-
drehs
)
A proper noun refers to the name of a person, place, or thing.
proper noun
a. Andrew
Andrés se va a casar con Laura el mes que viene.Andrew is getting married to Laura next month.
Copyright © 2025 Dictionary Media Group, Inc.