Wikipedia states that there are categories of techniques:
These are called ‘Tachi-waza’.
There are 15.
Cat, hourglass, crane/crane-like
There are stances that are considered ‘preparatory positions’. There are 5 of those.
2. Blocking techniques.
These are called ‘Uke-waza’.
There are 27 types.
Roughly speaking, it appears the variations can be broken down into:
‘knife’ (and half-knife)
There are 5 blocks with the legs.
3. Striking techniques
This is called ‘Uchi-waza’
With the hands there are 44:
To various targets (head, sternum, clavicle, spleen, neck, side, etc.).
4. Kicking techniques
This is called ‘Keri-waza’ (good, because ‘kicking’ and ‘Keri’ both start with a ‘K’.
There are 26 types:
Front, back, side.
By movement (circular, sweep, jump, snap, thrust, flying etc.)