Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
Gwynedd
←
Welsh
Gwyndyd
(link)
←
Welsh
gwyn
(mention)
←
Proto-Indo-European
*weydʰ-
(derived)
←
Proto-Indo-European
*weyh₁-
(derived)
←
Old Irish
Féni
(mention)
←
Old Irish
fían
(mention)
→
Welsh
Gwyneth
(mention)