Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Luxembourgish -er
Proto-Germanic *-ārijaz (derived)
Latin -ārius (derived)

Bavarian -er (cognate)
Luxembourgish Bauer (affix)
Luxembourgish Bäcker (affix)
Luxembourgish Dichter (affix)
Luxembourgish Feeler (compound)
Luxembourgish Gäertner (affix)
Luxembourgish Museker (affix)
Luxembourgish Aarbechter (affix)
Luxembourgish Leefer (affix)
Luxembourgish Drécker (affix)
Luxembourgish Awunner (affix)
Luxembourgish Grënner (affix)
Luxembourgish Dénger (affix)
Luxembourgish Schënner (affix)
Luxembourgish Reider (affix)
Luxembourgish Doléiner (affix)
Luxembourgish Stiermer (affix)
Luxembourgish Verdeedeger (affix)
Luxembourgish Englänner (affix)
Luxembourgish Schrëftsteller (affix)
Luxembourgish Stater (affix)