Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
arg
←
Proto-Germanic
*argaz
(inherited)
←
Old Danish
argh
(inherited)
←
Proto-Indo-European
(derived)
←
Proto-Indo-European
*h₃erǵʰ-
(mention)
←
Old Norse
argr
(inherited)
→
Old English
earh
(cognate)