Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
drúis
←
Middle Irish
drúis
(inherited)
←
Old Irish
drús
(inherited)
←
Old Irish
drúth
(mention)
→
Irish
drúisiúil
(affix)