Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Pennsylvania German
Keppche
←
German
Köpfchen
(cognate)
←
German
Käppchen
(cognate)
←
Dutch
kopje
(cognate)
←
Pennsylvania German
Kopp
(affix)
←
Pennsylvania German
-che
(affix)
←
Pennsylvania German
Kapp
(affix)
←
Pennsylvania German
-che
(affix)