Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
esgid
←
Ancient Greek
σκῦτος
(cognate)
←
Proto-Indo-European
[[*ped-]][[*skuH-t-]]
(derived)
←
Cornish
eskit
(cognate)
←
Cornish
eskys
(mention)