This is the 11405th most frequent Catalan word.
usen
"Usen" is the third-person plural form of the verb "usar," meaning "they use."
Here, 'usen' is used as the third person plural present tense of the verb 'usar', meaning 'they use'.
A les escoles, generalment, usen llapis per escriure.
In schools, they generally use pencils to write.
Again, 'usen' is utilized to mean 'they use', highlighting its flexibility in describing various actions by different subjects.
Quan llegeixen, usen ulleres per veure millor.
When they read, they use glasses to see better.
In this sentence, 'usen' continues to represent 'they use' and refers to the action by scientists.