Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
failt
←
Proto-Celtic
*wāletiyā
(inherited)
←
Irish
fáilte
(cognate)
←
Proto-Indo-European
*welh₁-
(derived)
←
Old Irish
fáilte
(inherited)
→
Manx
neufailt
(prefix)