This is the 88th most frequent Spanish word.
sector
A part or division of a larger area, group, or activity.
Here, 'sector' refers to a specific geographic area or part of a city.
En este sector de la ciudad, hay muchos restaurantes y cafeterías.
In this sector of the city, there are many restaurants and cafes.
In this sentence, 'sector' is applied to a specific field or branch of societal infrastructure involving education.
El sector educativo enfrenta desafíos importantes en el acceso a la tecnología.
The educational sector faces important challenges in accessing technology.
Here, 'sector' is used to indicate a distinct part of an economy or industry that specializes in a specific activity.