Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old High German
-ari
←
Proto-Germanic
*-ārijaz
(inherited)
←
Proto-Germanic
*warjaz
(inherited)
←
Middle High German
-er
(link)
←
Old High German
Baiāri
(mention)
←
Old High German
Romāri
(mention)
→
Bavarian
-er
(inherited)