yì
different
Original meaning:
carry on the head
Depicts two hands putting something on top of the head. Based on the original meaning "carry on the head", now written as 戴. The current meaning is a phonetic loan.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Early Western Zhou (~1000 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
Component uses
Iconic component in 1 character (1 verified)
Sources
李学勤《字源》p.204-205