Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
cian
←
Proto-Celtic
*kēnos
(inherited)
←
Old Irish
cían
(inherited)
→
Scottish Gaelic
cian-dhealbh
(affix)
→
Scottish Gaelic
cèin
(mention)