Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
megin
←
Proto-Celtic
*makīnā
(inherited)
←
Proto-Celtic
*mak-
(mention)
→
English
maw
(cognate)
→
Old English
maga
(cognate)
→
Welsh
megino
(affix)