Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
frouezh
←
Proto-Brythonic
*fruɨθ
(inherited)
←
Welsh
ffrwyth
(cognate)
←
Latin
fructus
(derived)
→
Welsh
ffrwyth
(cognate)