Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
twymyn
←
Proto-Celtic
*teɸesmis
(derived)
←
Welsh
twym
(mention)
←
Proto-Indo-European
*tep-
(root)
←
Proto-Indo-European
*tep-
(derived)