Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Gespréich
←
Middle High German
gespræche
(inherited)
←
Old High German
gisprāhhi
(inherited)
→
German
Gespräch
(cognate)
→
Luxembourgish
gespréicheg
(suffix)