Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
zachodni
←
Polish
zachód
(affix)
←
Polish
-ni
(affix)
→
Polish
zachodniosłowiański
(affix)
→
Ukrainian
західний
(cognate)