You are probably working with fonts from some time now.. and you don’t consider yourself as a type nerd, but it’s a good thing to go back to the basics and check what’s what.
Here you go – practice :
Stem
Counter
Shoulder
Serif
Ascender
Arc of stem
Link
Loop
Ear
Serif
Arm
Crossbar
Ascent
Ascender line
Cap height
X-height
Baseline
Descender line
Descent
Apex
Aperture
Finial
Axis
Crotch
Leg
Chin
Swash
Spine
Flag
Tail
Adnate
Abrupt
Beak
Lachrymal
etc.
There are many posters and pictures of the anatomy of the letters, but I believe this one is good example.
Say “Thank you” to the guys from : typedeskref.com