Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
glic
←
Proto-Celtic
*glikkis
(inherited)
←
Old Irish
glicc
(inherited)
→
English
glicke
(cognate)
→
Irish
gliceas
(affix)