This is the 6714th most frequent Spanish word.
comienzan
"Comienzan" means "they begin" or "they start."
The word 'comienzan' is used in its subjunctive form to denote the action of starting or beginning, relative to the students initiating their classes.
Los estudiantes comienzan sus clases a las ocho de la mañana.
The students begin their classes at eight in the morning.
Here, 'comienzan' signifies the habitual action of initiating the learning process in each day, describing a repetitive occurrence.
Cada día comienzan a aprender algo nuevo en la escuela.
Every day they begin to learn something new at school.
In this instance, 'comienzan' references the specific triggering action of starting a race, indicating the onset of an event prompted by an external signal.