hé, gě
to join
Depicts two mouths talking to each other.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Late Western Zhou (~800 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
hé
combine, unite, join; gather; to close; to join; to fit; to be equal to; whole; together; round (in battle); conjunction (astronomy); 1st note of pentatonic scale; old variant of 盒[hé]
gě
100 ml; one-tenth of a peck; measure for dry grain equal to one-tenth of sheng 升 or liter, or one-hundredth dou 斗
hé
variant of 合[hé]
Component uses
Sources
季旭昇《說文新證》p.438