Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Armenian
թիւր
←
Proto-Indo-European
*tek-
(inherited)
←
Old Armenian
թեքեմ
(mention)
→
Old Armenian
խեղաթիւր
(compound)