Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
społem
←
Polish
pospołu
(mention)
←
Polish
wespół
(mention)
←
Polish
wspólny
(mention)
←
Slovene
spolom
(cognate)
←
Proto-Slavic
*[[sъ]] [[polъ|polъmъ]]
(mention)
←
Ukrainian
спо́лом
(cognate)
→
Polish
pospołu
(mention)
→
Polish
spółdziałać
(compound)