Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Saach
←
German
Sache
(cognate)
←
English
sake
(cognate)
←
Proto-Germanic
*sakō
(derived)
←
Old High German
sahha
(derived)
←
Icelandic
sök
(cognate)
←
Dutch
zaak
(cognate)
→
Luxembourgish
Haaptsaach
(affix)