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"Segundo" is a form of "segundo", an adjective which is often translated as "second". "Un" is an indefinite article which is often translated as "a". Learn more about the difference between "un" and "segundo" below.
un(
oon
)An indefinite article is a word that indicates that a noun is not specific (e.g., a girl).
1. (singular)
b. an (before vowel sound)
Tienen una vieja cámara que todavía funciona.They have an old camera which is still working.
segundo(
seh
-
goon
-
doh
)An adjective is a word that describes a noun (e.g., the big dog).
a. second
La segunda vez que viajé a España, terminé quedándome por tres años.The second time I traveled to Spain, I ended up staying for three years.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
This means that the noun can be masculine or feminine, depending on the gender of the noun it refers to (e.g., el doctor, la doctora).
a. deputy
La gerente no está aquí, pero pueden hablar con su segundo.The manager isn't here, but you can speak with her deputy.
a. second one
Escucha, el primero es el mío y el segundo es el tuyo.Listen, the first one is mine and the second one is yours.