Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
beart
←
Proto-Celtic
*bertā
(inherited)
←
English
berth
(borrowed)
←
Irish
ceannbheart
(link)
←
Irish
cíochbheart
(link)
←
Irish
claonbheart
(link)
←
Old Irish
bert
(inherited)
←
Old Irish
bert
(inherited)
←
Old Irish
bert
(inherited)
→
Irish
cíochbheart
(compound)
→
Irish
ainbheart
(affix)
→
Irish
ceannbheart
(affix)
→
Irish
frithbheart
(affix)