Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle High German
klagen
→
Alemannic German
chlaage
(inherited)
→
Luxembourgish
kloen
(inherited)
→
Swedish
klaga
(cognate)