Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
Mudder
←
German
MUD
(suffix)
←
German
er
(suffix)
←
English
mudder
(borrowed)
←
Luxembourgish
Mudder
(cognate)