Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
eiraght
←
Middle Irish
eigrecht
(inherited)
→
Irish
oidhreacht
(cognate)
→
Manx
yn-eiraghtagh
(affix)