Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
traa
←
Old Irish
tráth
(inherited)
→
Manx
co-hraagh
(affix)
→
Manx
traaoil
(suffix)