Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
eidel
←
German
eitel
(cognate)
←
English
idle
(cognate)
←
Proto-Germanic
*īdalaz
(inherited)
←
Old High German
ītal
(inherited)
←
Old High German
ītal
(mention)
←
Dutch
ijdel
(cognate)
→
German
eitel
(cognate)