This is the 8063rd most frequent Chinese word.
boy
The Chinese word "boy" (男孩, nánhái) means "a male child."
In this sentence, '男孩' (nánhái, boy) is used as a noun to refer to a young male individual.
那个男孩正在踢足球。
The boy is playing football.
Here, '小男孩' (xiǎo nánhái, little boy) incorporates the adjective '小' (xiǎo, little) to describe the noun '男孩' (boy), specifying size and age.
我看见一个小男孩拉着一个大气球。
I saw a little boy holding a big balloon.
The term '男孩们' (nánhái men, boys) is the plural form of '男孩' (boy), created by adding '们' (men), which is a typical plural marker for people in Chinese.