Trying to make sense of the web of tactical devices and to organise them into "families"

Summary of Tactical Devices

1. The Attack and Defense
     Counter attack (Zwischenzug) "intermediate move"
2. The Simultaneous Attacks
    Battery (compounded attack)
    Discovery
        Discovered Attack
        Discovered Check
        Double Check
    Double Blow (simultaneous theme)
    Fork
    Pin
    Skewer
3. The Undermine
    Distraction (Deflection)
4. The Monarch Attacks (Checkmating patterns)
5. The Sacrifice
    Active
        Decoy
        Clearance
    Passive
6. The Enforcement of the Draw
    Pursuit
    Stalemate
7. The Implosion (Zugzwang) "compulsion to move"

Motifs:           
Double threat       
En Prise
Encircling and entrapment          
Forcing moves
Function
Geometry

(more tactical motifs need to be added)

*actually come to think of it, a good exercise would be to link motifs with tactical families to assist tactical thought in games and study.