Cách sử dụng
The word 'filler' is used to describe something that is put in a space to make it full, that may not have any specific or important purpose. For example, when you are writing a speech, you might use filler words like 'um' or 'ah' to give yourself time to think. Filler words are also used in conversation when we need to pause and think about what we want to say next. Outside of speech, filler can also refer to substances or materials used to 'fill' empty spaces or gaps, like filler materials in construction or car repair.