Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
croch
←
Proto-Indo-European
*(s)ker-
(root)
←
Latin
crux
(derived)
←
Old Irish
croch
(inherited)
←
Old Irish
crochaid
(inherited)
←
Old Irish
croch
(mention)
→
Irish
crochta
(mention)
→
Irish
crochadh
(affix)