Grapheme and Uppercase

Grapheme noun - A written symbol that is used to represent speech.

Uppercase and grapheme are semantically related. In some cases you can replace term "Uppercase" with "Grapheme", this nouns are similar.

Uppercase noun - One of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis.

Grapheme and uppercase are semantically related. Sometimes you can use "Grapheme" instead a noun "Uppercase".