Pause fillers are words or phrases that are used to fill a pause in conversation. They are often used to indicate hesitation, uncertainty, or to buy time while thinking of what to say next. Common pause fillers include 'uhs, ' 'ers, ' and 'ahems.' UHS stands for 'unh unh, ' ERS stands for 'er er, ' and AHEMS stands for 'ahem ahem.' These pause fillers are often used to indicate that the speaker is unsure of what to say next, or to indicate that they are searching for the right words.