This is the 187th most frequent Vietnamese word.
cái
The Vietnamese word "cái" is a classifier used for most tangible, inanimate objects.
In this sentence, 'cái' denotes an abstract concept or quality, such as 'the beauty'.
Cái đẹp thật là đáng trân trọng.
Beauty is truly respectable.
'Cái' functions as a classifier for shirt (áo), used to indicate individual items.
Tôi vừa mua một cái áo mới.
I just bought a new shirt.
Here, 'cái' is a classifier used for desk (bàn), specifying a singular noun.