This is the 3951st most frequent Catalan word.
compren
"Compren" means "understand" (third person singular present of "comprendre").
In this sentence, 'comprèn' means 'understands', indicating the child's ability to grasp the rules.
El nen comprèn les normes del joc.
The child understands the rules of the game.
Here, 'compren' is used to express comprehension or empathy towards someone's situation.
Ells comprenen les dificultats que pots tenir.
They understand the difficulties you may have.
In this context, 'comprendre' refers to the concept or act of understanding as a general notion.