Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
gär
←
German
gern
(cognate)
←
Proto-Germanic
*gernô
(inherited)
←
Proto-West Germanic
*gernō
(inherited)
←
Old High German
gerno
(inherited)
←
Icelandic
gjarna
(cognate)
←
Dutch
gaarne
(cognate)
←
Swedish
gärna
(cognate)
→
Luxembourgish
Stär
(mention)