Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lithuanian
-umas
←
Latvian
-ums
(cognate)
←
Samogitian
-oms
(cognate)
→
Lithuanian
malonumas
(affix)
→
Lithuanian
turtingumas
(affix)
→
Lithuanian
vienišumas
(affix)
→
Latvian
-ums
(cognate)