This is the 7447th most frequent Chinese word.
行长
Bank president.
In this sentence, '行长' is used as a noun to refer to the position of the bank's president.
李先生是银行的行长。
Mr. Li is the bank president.
Here, '行长' is used abstractly to represent the aspiration of attaining the role of president within the context of a banking institution.
我的朋友梦想成为一家银行的行长。
My friend dreams of becoming a bank president.
In this context, '行长' refers to a specific individual holding the position of president in a bank and indicates their standing in the professional field.