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"Viruela" is a noun which is often translated as "smallpox", and "sarampión" is a noun which is often translated as "measles". Learn more about the difference between "viruela" and "sarampión" below.
la viruela(
bee
-
rweh
-
lah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
el sarampión(
sah
-
rahm
-
pyohn
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).