Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
rúm
←
Old English
rūm
(derived)
←
Scottish Gaelic
rùm
(cognate)
←
Proto-Germanic
*rūmą
(derived)
←
Old Norse
rúm
(derived)