vs
QUICK ANSWER
"Más pequeño" is a phrase which is often translated as "smaller", and "menor" is an adjective which is often translated as "younger". Learn more about the difference between "más pequeño" and "menor" below.
más pequeño(
mahs
peh
-
keh
-
nyoh
)A phrase is a group of words commonly used together (e.g., once upon a time).
menor, el menor, la menor(
meh
-
nohr
)An adjective is a word that describes a noun (e.g., the big dog).
e. lesser (in quantity, importance)
La contaminación afecta a las urbes y, en menor medida, también a las zonas rurales.Pollution affects cities and, to a lesser extent, rural areas too.
c. lowest (in number, value)
De todas estas, ¿cuál es la cifra menor?Of all these, which is the lowest figure?
d. least (in quantity, importance)
Iba con retraso, pero ese era el menor de mis problemas.I was running late, but that was the least of my problems.
3. (minimal)
a. slightest
No te preocupes; no tiene la menor importancia.Don't worry; it doesn't have the slightest importance.
4. (secondary)
a. minor
La exposición incluye obras menores de Picasso.The exhibition contains minor works by Picasso.
This means that the noun can be masculine or feminine, depending on the gender of the noun it refers to (e.g., el doctor, la doctora).