Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
ватах
←
Bulgarian
ватог
(cognate)
←
Old Church Slavonic
ватахъ
(inherited)
←
Proto-Indo-European
*wedʰ-
(cognate)