差动齿轮

• 羊(goat)ASSOCIATIVE
• 工(craftsman; work)PHONETIC

Each hair of a goat differs from the rest, just like differences that are uneven and varied.

• 云(cloud)PHONETIC
• 力(strength; power)RADICAL

Powerful strength like rolling clouds surge creates motion.

• 車(vehicle; cart)RADICAL
• 侖(order; sequence)PHONO-SEMANTIC

A wheel spinning in regular circular order creates an unbroken round motion.