Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Armenian
երախ
←
Armenian
ռեխ
(doublet)
←
Old Armenian
երախ
(learned borrowing)
→
Armenian
ռեխ
(doublet)