This is the 487th most frequent Catalan word.
sap
Third-person singular present indicative form of "saber," meaning "knows."
In this case, 'sap' again is from 'saber,' showing knowledge or ability, referring to the dog's learned behavior.
El gos sap com obrir la porta.
The dog knows how to open the door.
Here, 'sap' represents 'to know' in a conditional context, referring to a specific instance of having knowledge.
Si algú sap el que va passar, ho hauria de dir.
If someone knows what happened, they should say it.
Here, 'sap' is the third person singular form of the verb 'saber,' meaning 'to know,' indicating knowledge of information.