from Lego Classification Tree Physical arrangement 2021-02-11
- 2 x 4 block
 - 1 x 1 typical
- Block, plate. Includes rounds, cones, does not include tiles
 
 - plate (often as in “tectonic plate”)
- 1×2
 - 1×3
 - 1×4
 - 2×2
 - 2×3
 - 2×4
 - Other
 
 - Other Rectangular Blocks
 - slope block
 - 3x6 wedge
 - Round top, 2 x 2 cones
 - 1 x 1 tile
- Includes rounds
 
 - Tile, grill, round bottom
 - 1 x 2 curved slope
 - Other Curved Slopes
 - 1 x 1 slope
 - Other Ramps
- center stud 1×2 2×2
 
 - 90 degree conversion
- bracket
 - Hinge lock joint
 
 - Clip and closed handle
 - Lamp holder and open handle, bar
- wedge
 - Small wedges of 2 x 4 or smaller
 - Large wedge
 - Ball Joint Joints
 
 - Guttiferales (plant order)
 - Other end decorations
 - T-shaped
 - Cross-axis related
- I’ll put the pin and what I have both in here.
 
 - Tire related
 - Propeller related
 - Transparent decoration Car windshields, transparent domes, etc.
 - Plate with holes
 - pin-related
 - Round Plate 6 x 6
 - Other round plates, blocks, turntables
 - garden variety (of)
 - Blocks with holes in them.
 - gear
 - Other parts
 - rubber
 
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