Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
-som
→
English
-some
(inherited)
→
English
-some
(inherited)
→
Middle English
buxum
(suffix)
→
Middle English
hatesum
(affix)
→
Middle English
hevysum
(affix)
→
Middle English
wynsom
(affix)
→
Middle English
noysom
(affix)