Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*h₂ermos
→
German
Arm
(inherited)
→
Faroese
armur
(derived)
→
West Frisian
earm
(inherited)
→
Central Franconian
Ärm
(inherited)
→
Old High German
arm
(derived)