Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
gan
←
Proto-Germanic
*gāną
(inherited)
←
Proto-West Germanic
*gān
(inherited)
←
Proto-Indo-European
*ǵʰeh₁-
(root)
←
Proto-Indo-European
*ǵʰeh₁-
(derived)
→
Old English
undergan
(prefix)
→
Scots
gang
(cognate)