Meaning of subscripted and superscripted formatted text

Question

What is subscripted and superscripted formatted text? And when to use it?

Answer 1

Superscript text appears half a character above the baseline, while subscript appears half a character below the baseline.

You can use <sup> to define superscript like this example:
<p>This text contains^superscripttext.</p>

and you can use <sub> to define subscript like this example:
<p>This text contains_subscripttext.</p>

Mostly, they are widely used in mathematics expressions or some formula.

Answer 2

Superscript and subscript refer to numbers that are positioned slightly higher or slightly lower than the text on the line. For example, a footnote or endnote number reference is an example of superscript, and a scientific formula might use subscript text.

Answer 3

superscript means "up"
subscript means "down"
you can understand properly with this examples:
sup™ :- TM is superscript
sub¡ :- i is subscript.

Answer 4

superscript.. is used in..writing mathematical formulas.. X™... (X square) likewise.,whereas.. subscript is used to write...base values...like... Log..base e like that...