Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*brokkos
→
English
broccoli
(derived)
→
English
brock
(derived)
→
Old English
brocc
(derived)
→
Breton
broc'h
(inherited)
→
Welsh
broch
(inherited)
→
Irish
broc
(inherited)
→
Galician
broco
(derived)
→
Manx
broc
(inherited)
→
Cornish
brogh
(inherited)
→
Latin
broccus
(derived)
→
Middle Irish
brocc
(inherited)