Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cleas
←
English
class
(borrowed)
←
Irish
cleasach
(link)
←
Irish
cleasaí
(link)
←
Irish
lúthchleas
(link)
←
Old Irish
cles
(inherited)
→
Irish
cleasach
(affix)
→
Irish
lúthchleas
(affix)
→
Irish
cleasaí
(affix)