Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
iompaigh
←
Proto-Celtic
*ambisuweti
(inherited)
←
Old Irish
imm·soí
(inherited)
→
Irish
iompaitheach
(suffix)
→
Irish
aisiompaigh
(affix)