Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Faroese
langur
←
Proto-Germanic
*langaz
(derived)
←
Proto-Indo-European
*dl̥h₁gʰós
(derived)
←
Old Norse
langr
(derived)
→
Faroese
langafríggjadagur
(compound)