Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
diaga
←
Old Irish
díadae
(inherited)
←
Old Irish
día
(mention)
→
Irish
dia
(link)
→
Irish
diagacht
(affix)