Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
bawd
←
Breton
meud
(cognate)
←
Welsh
mawd
(mention)
←
Cornish
meus
(cognate)
→
Breton
meud
(cognate)
→
Old Armenian
մատն
(cognate)