Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
ger
←
Old English
ċearu
(cognate)
←
Proto-Brythonic
*gėr
(inherited)
←
Proto-Celtic
*garyos
(inherited)
←
Ancient Greek
γῆρυς
(cognate)
←
Proto-Indo-European
(inherited)
←
Proto-Indo-European
*ǵeh₂r-
(mention)
←
Khotanese
(cognate)
←
Latin
garriō
(cognate)
→
Cornish
gerlyver
(compound)
→
Cornish
geryow
(suffix)