Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
kam
←
Proto-Celtic
*kambos
(derived)
←
Welsh
-
(cognate)
←
English
jamb
(mention)
←
Irish
cam
(cognate)
←
Scottish Gaelic
-
(cognate)
←
Chinese
kam
(borrowed)
→
English
camous
(doublet)