Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Zulu
buya
←
Swazi
buya
(cognate)
←
Venda
vhuya
(cognate)
→
Phuthi
buya
(cognate)
→
Fanagalo
buya
(inherited)
→
Northern Ndebele
buya
(cognate)
→
Southern Ndebele
buya
(cognate)
→
Swazi
buya
(cognate)
→
Tsonga
vuya
(cognate)
→
Venda
vhuya
(cognate)
→
Xhosa
buya
(cognate)
→
Zulu
buyisa
(affix)
→
Zulu
buyela
(affix)