Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ainrianta
←
Irish
an-
(affix)
←
Irish
srianta
(affix)
→
Irish
ainriantacht
(affix)
→
Scottish Gaelic
ain-srianta
(cognate)