Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
Sostyn
←
Irish
Sasana
(cognate)
←
Scottish Gaelic
Sasainn
(cognate)
←
Manx
Sostynagh
(mention)
←
Old Irish
Saxain
(inherited)
→
Scottish Gaelic
Sasainn
(cognate)
→
Manx
Sostynagh
(affix)