Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
muffen
←
Middle Low German
muffen
(borrowed)
→
English
mope
(cognate)
→
English
muff
(mention)
→
German
müffeln
(mention)
→
German
Muff
(back-formation)