Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
soe
←
Old English
sā
(inherited)
←
Middle English
sō
(inherited)
←
Proto-Germanic
*saihaz
(inherited)
←
Proto-Indo-European
*seyk-
(derived)
←
Old Norse
sár
(derived)
←
Old Norse
sá
(mention)
←
Swedish
så
(cognate)