Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
bihan
←
Welsh
bychan
(cognate)
→
English
Morbihan
(mention)
→
Welsh
bychan
(cognate)
→
Spanish
pequeño
(cognate)
→
Irish
beag
(cognate)
→
Norman
pihangne
(borrowed)