vs 

QUICK ANSWER
"Eleven" is an adjective which is often translated as "once", and "thirteen" is an adjective which is often translated as "trece". Learn more about the difference between "eleven" and "thirteen" below.
eleven(
uh
-
leh
-
vihn
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. once
My cousin is eleven years old.Mi primo tiene once años.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
noun
a. el once
(m) means that a noun is masculine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
(M)
Her favorite number is eleven because it's the day of her birthday.Su número favorito es el once porque es el día de su cumpleaños.
Copyright © 2025 Dictionary Media Group, Inc.
thirteen(
thuhr
-
tin
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. trece
Only thirteen pupils went to class.Solo fueron a clase trece alumnos.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
noun
a. el trece
(m) means that a noun is masculine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
(M)
Thirteen is my lucky number.El trece es mi número de la suerte.
Copyright © 2025 Dictionary Media Group, Inc.