Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
kazen
←
Middle High German
katzen
(inherited)
←
Middle High German
katze
(mention)
←
Luxembourgish
Kaz
(cognate)