Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old High German
Lucilinburhuc
→
English
Luxembourg
(derived)
→
Irish
Lucsamburg
(derived)
→
Luxembourgish
Lëtzebuerg
(derived)
→
Latvian
Luksemburga
(cognate)