This is the 69th most frequent Vietnamese word.
cả
"Both," "all," or "whole," depending on context.
Here, 'cả' means 'entire', emphasizing the completeness of the noun.
Tôi yêu cả gia đình cậu.
I love your entire family.
Here, 'cả' means 'both', emphasizing inclusivity of the subjects.
Cả hai chúng ta đều sai.
Both of us are wrong.
Here, 'cả' is used to express 'both... and...', connecting two clauses inclusively.