Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
siebenundachtzig
←
German
sieben
(compound)
←
German
und
(compound)
←
German
achtzig
(compound)
→
German
siebenundachtzigste
(suffix)
→
Pennsylvania German
siwwe un achtzich
(cognate)