Cup is usually used to refer to a small cup with a handle, while glass is usually used to refer to a long glass cup. For example, the glasses we usually use to drink can be called glass, while those used to drink coffee and tea can be called cup.
English is a language that many people want to learn now, because they will use it more or less when they travel abroad. In fact, like Chinese, English has many words with similar meanings but slight differences.
For example, cup and glass are two English words. Although they refer to cups, glass is generally used to refer to glass cups, and the shape of such cups is generally relatively long.
Cup is usually used to refer to a smaller cup, and it is generally used to refer to a cup with a handle. For example, glass can be used to refer to the glass for drinking, and cup can be used to refer to the cup we usually use to drink coffee and tea.