Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
íkorni
←
Proto-Germanic
*aikwernô
(derived)
←
Proto-Indo-European
*wer-
(derived)
←
Old Norse
íkorni
(derived)
→
German
Eichhörnchen
(cognate)
→
Alemannic German
Eichhore
(cognate)
→
Icelandic
rauðíkorni
(affix)
→
Icelandic
íkornabygg
(affix)