Cách sử dụng
Kaiser is a word that comes from German, and it means "emperor". It used to be used to refer to the title of the ruler of Germany from 1871 to 1918. Nowadays, the word is not used in everyday conversation in English, except when referring to historical figures such as Kaiser Wilhelm II. In general, it is best to avoid using the word in casual conversation, as it may not be well understood by others. However, it may sometimes be used in more formal or academic settings to talk about European history or politics.