Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
armur
←
Proto-Germanic
*armaz
(derived)
←
Old Norse
armr
(derived)
→
Icelandic
armband
(compound)
→
Icelandic
armstóll
(compound)
→
Luxembourgish
aarm
(cognate)