Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
tuí
←
English
thatch
(cognate)
←
Old Irish
tuige
(inherited)
→
Irish
tuíchlár
(affix)
→
Irish
tuíodóir
(affix)