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"Estornudos" is a form of "estornudo", a noun which is often translated as "sneeze". "Tos" is a noun which is often translated as "cough". Learn more about the difference between "estornudos" and "tos" below.
el estornudo(
ehs
-
tohr
-
noo
-
doh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
la tos(
tohs
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. cough
Esa tos no suena bien; deberías ver a un médico.That cough does not sound good; you should see a doctor.