Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
tosaigid
→
Irish
tosaigh
(inherited)
→
Scottish Gaelic
tòisich
(inherited)
→
Manx
toshee
(inherited)