Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
claddu
←
Proto-Brythonic
*klėðɨd
(inherited)
←
Proto-Celtic
*kladeti
(inherited)
→
Welsh
angladd
(mention)
→
Old Irish
claidid
(cognate)