Evolution

Seal script
Shuowen (~100 AD)Regular script
ModernDefinitions
tǔ
soil, earth; items made of earth
dù
chǎ
tú
Tǔ
Tu (ethnic group); surname Tu
tǔ
earth; dust; clay; local; indigenous; crude opium; unsophisticated; one of the eight categories of ancient musical instruments 八音[bāyīn]
mǔ
mù
méi
mǔ
mother; female elders; female
mú
wǔ
wú
mǔ
mother; elderly female relative; origin; source; (of animals) female