Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
zesummen
←
German
zusammen
(cognate)
←
Old High German
zisamane
(derived)
←
Icelandic
saman
(cognate)
←
Dutch
tezamen
(cognate)
→
Swedish
tillsammans
(cognate)