Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
gleuaden
←
Breton
glaweden
(cognate)
←
Welsh
(suffix)
←
Welsh
ad
(suffix)
←
Welsh
(suffix)
←
Welsh
en
(suffix)
←
Proto-Indo-European
*ǵʰel-
(inherited)
←
Cornish
glosen
(cognate)