vs 

QUICK ANSWER
"Activista" is a noun which is often translated as "activist", and "altruista" is an adjective which is often translated as "altruistic". Learn more about the difference between "activista" and "altruista" below.
el activista, la activista(
ahk
-
tee
-
bees
-
tah
)
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).
masculine or feminine noun
a. activist
Cientos de activistas protestaron frente al matadero.Thousands of activists rallied outside the slaughterhouse.
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. activist
Marisol se involucró con un grupo activista en la capital.Marisol got involved with an activist group in the capital.
Copyright © 2025 Dictionary Media Group, Inc.
altruista, el altruista, la altruista(
ahl
-
trwees
-
tah
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. altruistic
Dada tu posición y riqueza, deberías asumir una actitud más altruista hacia los necesitados.Given your position and wealth, you should adopt a more altruistic attitude towards those in need.
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).
masculine or feminine noun
a. altruist
Un grupo de altruistas financia el concierto de música clásica para la obra benéfica.The classical concert is financed by a group of altruists for the charity.
Copyright © 2025 Dictionary Media Group, Inc.