Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Summerwee
←
German
Sommerweg
(cognate)
←
Luxembourgish
Summer
(compound)
←
Luxembourgish
Wee
(compound)