Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scots
aicorn
←
Old English
æcern
(inherited)
←
Middle English
acorn
(inherited)
←
Proto-Germanic
*akraną
(inherited)
←
Proto-Indo-European
*h₂ógeh₂
(derived)
→
English
acorn
(cognate)