Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Armenian
թթուութիւն
←
Old Armenian
թթու
(suffix)
←
Old Armenian
ութիւն
(suffix)
→
Armenian
թթվություն
(derived)