Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
łój
←
Proto-Slavic
*lojь
(inherited)
→
Lower Sorbian
łoj
(cognate)
→
Polish
lać
(link)
→
Polish
Łojek
(suffix)
→
Polish
łoić
(suffix)