This is the 4646th most frequent Spanish word.
carecen
"Carecen" means "they lack."
This usage showcases 'carecen' expressing the absence of pertinent data in the documents.
Estos documentos carecen de información relevante.
These documents lack relevant information.
Here, 'carecen' indicates the absence of proper maintenance in the parks.
Los parques carecen de mantenimiento adecuado.
The parks lack proper maintenance.
In this sentence, 'carecen' signifies the concept of students not having sufficient motivation.