Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Bantu
*-dóba
→
Rwanda-Rundi
roba
(inherited)
→
Xhosa
loba
(inherited)
→
Zulu
loba
(inherited)
→
Zulu
doba
(inherited)