Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle High German
vlücke
→
German
flügge
(inherited)
→
German
flück
(inherited)
→
Icelandic
fleygur
(mention)
→
Luxembourgish
fléck
(derived)