This is the 342nd most frequent German word.
freuen
"Freuen" means "to be glad" or "to look forward to."
In this example, 'freuen' is reflexive ('freuen uns') and is combined with the preposition 'über' to express happiness about a current or past situation or item.
Wir freuen uns über das Geschenk.
We are pleased about the gift.
Here, 'freuen' is not reflexive but expresses a polite and formal way of sharing happiness regarding a current engagement or connection.
Es freut mich, Sie kennenzulernen.
I am pleased to meet you.
The verb 'freuen' is reflexive here ('freue mich') and is used with the preposition 'auf' to express an anticipation or positive expectation about a future event.