Homographs are words which share the same spelling but are nevertheless different in meaning and possibly also in pronunciation. An example is the word ‘bank’, which can either refer to a financial establishment in which you can do a lot of things to your money, or an edge of a river. In this case, we say they are two different words which happen to share the same spelling and the same pronunciation.
We all know that the final ‘e’ is almost always not pronounced, so ‘bite’, ‘ripe’, tape’ and ’shote’ are all monosyllabic words – there is only one vowel. Nevertheless, the ‘e’ at the end of all these words is definitely not useless, as it helps us pronounce these words correctly, and distinguish them from ‘bit’, ‘rip’, ‘tap’ and ’shot’ respectively.