This is the 8862nd most frequent Catalan word.
estrangera
"Estrangera" means "foreign woman" in English.
Here, 'estrangera' is used as an adjective to describe the noun 'llengua,' indicating it is foreign or not native.
La llengua estrangera més parlada al món és l'anglès.
The most spoken foreign language in the world is English.
In this sentence, 'estrangera' functions as an adjective describing the noun 'noia,' signifying her as foreign or from another country.
Vaig conèixer una noia estrangera en el viatge.
I met a foreign girl during the trip.
'Estrangera' here is an adjective modifying the noun 'literatura,' implying that the literature is from another country or culture.