Terminal font behavior is different from other fonts.

For example, here is a screenshot of terminal font glyphs. Why does it have limited glyphs and is not showing unicode codepoints?

Is there any relation between terminal font and codepage 437, because when I move the cursor to a specific font it shows codepoint value of page 437.

[![enter image description here][2]][2]

why arial fonts has so many glyphs and it has unicode codepoints [2]: https://i.sstatic.net/rRKGU.png