Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
swch
→
English
socket
(cognate)
→
Welsh
hwch
(doublet)
→
French
soc
(cognate)
→
Indonesian
soket
(cognate)