This is the 5229th most frequent Catalan word.
bianca
"Bianca" in Catalan means "jack" or "rest for a beam or weight."
In this sentence, 'Bianca' is a proper noun referring to a person's name.
La Bianca és una persona molt amable.
Bianca is a very kind person.
In this case, 'bianca' seems to imply the word for 'white'. Please note, 'bianca' in Catalan should be 'blanc' or 'blanca' for masculine or feminine forms of 'white'.
El color bianca no es troba sovint a la natura.
The color white is not often found in nature.
Here, 'Bianca' is again used as a proper noun to refer to a name, specifically of a cat.