Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
dökkur
←
German
dunkel
(cognate)
←
Faroese
døkkur
(cognate)
←
Proto-Germanic
*dankwaz
(derived)
←
Old Norse
døkkr
(derived)
←
Old Norse
dǫkkr
(mention)
→
Faroese
døkkur
(cognate)
→
Icelandic
dökkbrúnn
(affix)
→
Icelandic
dökkvíðir
(affix)
→
Icelandic
dökkasef
(affix)
→
Icelandic
dökkhæra
(affix)