Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cumtach
→
Scottish Gaelic
còmhdach
(inherited)
→
Scottish Gaelic
coodagh
(inherited(gd/gv))
→
Manx
còmhdaich
(derived(gv/gd))
→
Manx
coodee
(derived)
→
Old Irish
athchumtach
(affix)