Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
aotrom
←
Scottish Gaelic
ao
(prefix)
←
Scottish Gaelic
trom
(prefix)
←
Old Irish
étrum
(inherited)
→
Irish
éadrom
(cognate)