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