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