Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
-sn
←
Proto-Germanic
*-snō
(inherited)
←
Proto-Germanic
*-asnō
(mention)
←
Proto-Germanic
*-isnō
(mention)
←
Proto-Germanic
*-usnō
(mention)
←
Proto-Indo-European
*-sneh₂
(inherited)
→
English
dross
(suffix)
→
Old English
lybesn
(suffix)