This is the 969th most frequent Catalan word.
català
The Catalan word "català" means "Catalan" in English, referring to the Catalan language or something/someone related to Catalonia or its culture.
Here, "català" is used as a noun referring to the Catalan language.
Parlo català amb els meus amics.
I speak Catalan with my friends.
Here, "català" is used as a noun referring to a person of Catalan origin or nationality.
Ser català és una part important de la seva identitat.
Being Catalan is an important part of his identity.
Here, "català" is used as an adjective describing the book as Catalan.