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"Noticias" is a form of "noticias", a plural noun which is often translated as "news". "Avisos" is a form of "aviso", a noun which is often translated as "notice". Learn more about the difference between "noticias" and "avisos" below.
las noticias(
noh
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tee
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syahs
)la noticia
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. news (uncountable)
¿Oíste la noticia? Nos van a dar a todos un aguinaldo.Did you hear the news? They're going to give us all a Christmas bonus.
el aviso(
ah
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bee
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soh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. notice
Recibí un aviso de que el agua iba a estar apagada.I received a notice that the water would be off today.
a. advertisement
La empresa publicará una serie de avisos para promocionar nuestro producto nuevo.The company will publish a series of advertisements to promote our new product.
b. ad
Vine a informarme acerca del aviso que puso en el periódico.I came to ask about the ad you put in the paper.
c. advert (United Kingdom)
Regionalism used in the United Kingdom
Vi un aviso acerca del nuevo Shelby Cobra en una revista.I saw an advert about the new Shelby Cobra in a magazine.