Terminal font behavior is different from other fonts .

for example, here is a screen shot of terminal font glyphs 
why it has limited glyphs , why its not showing unicode codepoint ?
Is there any relation between terminal font and codepage 437 ,, because when i move cursor to a specific font , it shows codepoint value of page 437
[![enter image description here][1]][1]


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


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