Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
amann
←
Breton
amanenn
(mention)
←
Proto-Celtic
*emban-
(inherited)
←
Welsh
ymenyn
(cognate)
←
Proto-Indo-European
*h₃éngʷn̥
(inherited)
←
Cornish
aman
(cognate)
←
Old Irish
imb
(cognate)
→
Breton
kouign-amann
(compound)
→
Welsh
ymenyn
(cognate)
→
French
kouign-amann
(mention)