Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
cìoch
←
Proto-Celtic
*kīkos
(inherited)
←
Middle Irish
cích
(inherited)
←
Old Irish
cích
(inherited)
→
Scottish Gaelic
cìochag
(suffix)
→
Scottish Gaelic
cìochag-thràghad
(affix)