This is the 5354th most frequent Dutch word.
kun
"Kun" means "can" or "be able to" in English.
'Kan' in this context is used to indicate ability or skill in performing an activity.
Ik kan goed zwemmen.
I can swim well.
'Kun' here is used to formally inquire or request assistance, that's the use of the modal verb to ask permission or capability.
Kun je mij helpen met het huiswerk?
Can you help me with the homework?
'Kunt' is employed here as a modal verb to suggest a possibility or offer an alternative action.