Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
bendacht
←
Proto-Brythonic
*bendiθ
(cognate)
←
Proto-Celtic
*bendixtyū
(inherited)
←
Welsh
bendith
(cognate)
←
Latin
benedictiō
(derived)
←
Old Irish
-acht
(affix)
→
Welsh
bendith
(cognate)
→
Middle Irish
bennacht
(inherited)