Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
inchinn
←
Old Irish
inchinn
(inherited)
←
Old Irish
cenn
(mention)
→
Welsh
ymennydd
(cognate)
→
Irish
lárinchinn
(prefix)