QUICK ANSWER
"Time period" is a noun which is often translated as "el período de tiempo", and "era" is a noun which is often translated as "la era". Learn more about the difference between "time period" and "era" below.
time period(
taym
pir
-
i
-
ihd
)A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
a. el período de tiempo (M)
(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).
What's the time period for the experiment?¿Qué es el período de tiempo para el experimento?
b. la duración (F)
(f) means that a noun is feminine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
The extra holiday trains will run for a time period of three months.Los trenes extras para la temporada de fiestas van a correr por una duración de tres meses.
a. el momento (M)
(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).
In that time period between college and my first job, I was very depressed.En ese momento entre la universidad y mi primer trabajo, estaba muy deprimida.
era(
eh
-
ruh
)A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
b. la época (F)
(f) means that a noun is feminine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
The peaceful revolution of 1989 seemed the dawn of a new era.La revolución pacífica de 1989 parecía el comienzo de una nueva época.