Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
rūm
→
Old English
rum
(cognate)
→
Lower Sorbian
rum
(derived)
→
Estonian
ruum
(derived)
→
Old Norse
rúm
(cognate)