DEFINITION-
(Walter Tracey)
process of making words visually attractive and effective, professional is trained to perform that task and the designer will earn a living from it
(Willie Kunz)
intellectual and emotional meaning. Communicate a message.

Bag typography will stand out and good typography <<will blend in (Craig Ward)
How to piss of your designer friends and give them a migraine. (Zag)>>
Font- is what you use
Typeface- is what you see
Tracking is the spacing between each of the individual letters within a word. Higher the number, the further apart the letters.
Metric tracking is universal irrespective of any other factors.
Leading is then the spacing of each line of text from each other. This naming term came from the print process in which lead strips were used to split and add partitions between the lines.
http://blog.iso50.com/wp-content/uploads/2008/07/windowslivewritercraigwardtypography-144c7533181210951137-3.jpg
https://unilearn.hud.ac.uk/bbcswebdav/pid-1662672-dt-content-rid-2501259_1/courses/TFD1413-1516/05%20Typography.pdf