Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
regn
←
Proto-Germanic
*regną
(inherited)
←
Old Norse
regn
(inherited)
→
Icelandic
regnhlíf
(compound)
→
Icelandic
regnbogi
(affix)
→
Icelandic
regnvatn
(mention)
→
Icelandic
regnskógur
(compound)
→
Icelandic
regnþykkni
(compound)
→
Icelandic
regndropi
(affix)
→
Icelandic
regnkápa
(compound)
→
Icelandic
regnlegur
(affix)