superscript vs graphic symbol

superscript and graphic symbol both are nouns.

Word	Noun	Adjective	Verb	Adverb
superscript	Yes	Yes	No	No
graphic symbol	Yes	No	No	No

As nouns, graphic symbol is a hypernym of superscript; that is, graphic symbol is a word with a broader meaning than superscript:

superscript: a character or symbol set or printed or written above and immediately to one side of another character
graphic symbol: a written symbol that is used to represent speech

Other hypernyms of superscript include character, graph, grapheme.

superscript (noun)	graphic symbol (noun)
a character or symbol set or printed or written above and immediately to one side of another character	a written symbol that is used to represent speech

superscript (adjective)	graphic symbol (adjective)
written or printed above and to one side of another character