This is the 46th most frequent Catalan word.
però
"Però" means "but" in English.
In this sentence, 'però' is used as a conjunction to indicate contrast between the two clauses.
M'agrada la xocolata, però prefereixo la vainilla.
I like chocolate, but I prefer vanilla.
Here, 'però' serves to introduce information that adds a contrasting nuance to the previously mentioned fact.
Va fer els deures, però sense ganes.
He did the homework, but without enthusiasm.
In this context, 'però' is again contrasting two ideas within the same statement.