Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*-ěninъ
→
English
Poland
(mention)
→
Irish
Polainn
(mention)
→
Hungarian
lengyel
(mention)
→
Romanian
-ean
(derived(ro/rup))
→
Romanian
-ean
(derived)