Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ofráil
←
Irish
-áil
(affix)
←
Proto-Indo-European
*bʰer-
(root)
←
Latin
offerō
(derived)
←
Middle Irish
ofráil
(inherited)
→
Irish
tairg
(link)