Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Rwanda-Rundi
ukwezi
←
Luganda
omwezi
(cognate)
←
Shona
mwedzi
(cognate)
←
Swahili
mwezi
(cognate)