Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
czeremcha
←
Polish
trzemcha
(doublet)
←
Polish
trzemucha
(mention)
←
Proto-Slavic
*čermъxa
(derived)
←
Ukrainian
чере́мха
(borrowed)
→
Polish
trzemucha
(doublet)
→
Polish
trzemcha
(doublet)