Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
fiður
←
German
Gefieder
(cognate)
←
Proto-Germanic
*fiþriją
(inherited)
←
Icelandic
fjöður
(mention)
←
Old Norse
fiðri
(inherited)
→
Westrobothnian
førel
(cognate)
→
Icelandic
fiðrildi
(cognate)
→
Swedish
fjäril
(cognate)