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"Certain" is an adjective which is often translated as "seguro", and "noun" is a noun which is often translated as "el sustantivo". Learn more about the difference between "certain" and "noun" below.
certain(
suhr
-
tihn
)An adjective is a word that describes a noun (e.g., the big dog).
1. (definite)
a. seguro
What is certain is that technology will keep advancing.Lo que es seguro es que la tecnología seguirá avanzando.
2. (convinced)
a. seguro
I can't be completely certain, it's just a suspicion.No estoy completamente segura, es solo una sospecha.
3. (particular)
noun(
naun
)A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
1. (grammar)
a. el sustantivo (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).
The noun must agree with the verb in number.El sustantivo debe concordar con el verbo en número.