Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Jong
←
Proto-Germanic
*jungaz
(derived)
←
Old High German
junc
(derived)
←
Luxembourgish
jong
(mention)