This is the 6362nd most frequent Catalan word.
niça
"Niça" in Catalan means "Nice," referring to the city in France.
Here "Niça" refers to the city "Nice," showing its use as a proper noun.
Niça és una ciutat bellíssima a França.
Nice is a very beautiful city in France.
In this sentence, "niça" is used as an adjective meaning 'nice' or 'pleasant,' describing the cup.
Vaig comprar una tassa molt niça per al cafè.
I bought a very nice cup for coffee.
"Niça" here again acts as an adjective, however, it's used to denote satisfactory or acceptable qualities in the context.