This is the 356th most frequent Dutch word.
én
The Dutch word "én" means "and" (used for emphasis).
The word 'én' is used here to emphasize the conjunction of both items in the list.
Hij heeft én een auto én een fiets.
He has both a car and a bicycle.
The word 'én' connects two main clauses with an additional emphasis on the second clause.
Ze houdt van reizen, én ze studeert geschiedenis.
She loves traveling, and she studies history.
'Én' connects the sentences with an emphasis, making the second statement more notable.