This is the 51st most frequent Vietnamese word.
hai
The Vietnamese word "hai" means "two" in English.
Here, 'hai' denotes the number 'two', referring to the quantity of cats.
Tôi có hai con mèo.
I have two cats.
In this example, 'hai' indicates the number 'two', representing the number of available choices.
Trong bài thi này, bạn có hai lựa chọn.
In this exam, you have two choices.
Here, 'hay' serves as a conjunction meaning 'or', used to present alternatives (this 'hay' is pronounced the same as 'hai' but has a different meaning and function).