Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
atgeirr
←
English
atgar
(cognate)
←
Proto-Germanic
*atgaizaz
(inherited)
←
Old Norse
at-
(affix)
←
Old Norse
geirr
(affix)
→
Icelandic
atgeir
(inherited)