Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Faroese
fimm
←
Proto-Germanic
*fimf
(inherited)
←
Proto-Indo-European
*pénkʷe
(inherited)
←
Old Norse
fimm
(inherited)
→
Faroese
fimmmannafar
(compound)
→
Faroese
fimmti
(suffix)
→
Icelandic
fimm
(cognate)