Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Camm
←
English
Caen
(mention)
←
English
Cam
(mention)
←
English
Kamm
(mention)
←
Old Irish
camm
(cognate)