Start index: The start index in string slicing indicates the position of the character where slicing begins. It is inclusive, meaning that the character at the start index is included in the sliced portion of the string.
Slice notation: Slice notation is a way to specify which part of a string you want to extract or manipulate. It includes both a start and an end index separated by a colon (:).
Substring:A substring is a smaller piece of a larger string that has been extracted using slicing or other methods. It contains consecutive characters from within the original string.