This is the 6786th most frequent Chinese word.
汉语
"汉语" means "Chinese language."
This usage introduces '汉语' as the subject of the sentence, describing it as a field of study.
汉语是一门很有趣的语言。
Chinese is a very interesting language.
Here, '汉语' is used as the object of the verb '学习', indicating an action of learning the language.
我正在学习汉语，因为我对中国文化很感兴趣。
I am learning Chinese because I am very interested in Chinese culture.
In this sentence, '汉语' refers to the means of communication, specifying the language used to converse.