Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
glain
←
Proto-Celtic
*glani-
(inherited)
←
Welsh
glân
(mention)
←
Irish
gloine
(cognate)
←
Proto-Indo-European
*ǵʰelh₃-
(derived)
←
Old Irish
glain
(cognate)