Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
Gàidhealtachd
←
Irish
Gaeltacht
(cognate)
←
Scottish Gaelic
Gàidheal
(suffix)
←
Scottish Gaelic
achd
(suffix)
→
Irish
Gaeltacht
(cognate)