Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
acra
←
English
acre
(borrowed)
←
Irish
acaire
(alter)
←
Irish
acraíocht
(link)
←
Irish
acramhéadar
(link)
←
Irish
acaire
(alter)
←
Irish
acar
(alter)
←
Proto-Germanic
*akraz
(derived)
←
Proto-Indo-European
*h₂éǵros
(derived)
←
Old Norse
akr
(derived)
→
Irish
acrainm
(prefix)
→
Irish
acrach
(affix)
→
Irish
acrafóibe
(prefix)
→
Irish
acramhéadar
(affix)
→
Irish
acraíocht
(affix)