vs
QUICK ANSWER
"Barbilla" is a noun which is often translated as "chin", and "mentón" is a noun which is also often translated as "chin". Learn more about the difference between "barbilla" and "mentón" below.
la barbilla(
bahr
-
bee
-
yah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
el mentón(
mehn
-
tohn
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).