Letterform -Parts of Letterform and Terminology-

Hi! Here's an update. These images show several parts of letterform:

1.Appex

2.Bar

3.Bowl

4.Arm

 5.Stress

6.Stroke

7.Hairline

8.Tail

9.Ear, Link, Loop

10.Ascender

11.Descender

12.Counter

13.Stem

14.Serif

15.Terminal

16.X-Height

Those are parts and terminology of letterform. Hope it'll be useful. Thank you!