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"Ellas" is a pronoun which is often translated as "they", and "administración de empresas" is a noun which is often translated as "business administration". Learn more about the difference between "ellas" and "administración de empresas" below.
ellas()
A pronoun is a word that stands in for a noun (e.g., she).
b. them (object; after preposition)
Me refería a ellas, las que están sentadas allá.I was referring to them, the ones sitting over there.
Díselo a ellas.Tell it to them.
la administración de empresas()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (education)
a. business administration
La Sra. Sorolla es graduada en Económicas y tiene un máster en Administración de Empresas.Mrs. Sorolla is an economics graduate and has a master's degree in business administration.
b. business management
¿Vas a hacer Administración de Empresas o Marketing?Are you going to study business management or marketing?
c. business studies
Marco quiere estudiar administración de empresas y después montar su propio negocio.Marco wants to do business studies and start his own business after.