Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cliabh
←
Old Irish
clíab
(inherited)
→
English
cleeve
(derived)
→
Irish
cliabhán
(suffix)
→
Irish
cliabhrach
(mention)