Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
pięta
←
Proto-Slavic
*pęta
(inherited)
→
Lower Sorbian
pěta
(cognate)
→
Polish
piętka
(suffix)
→
Polish
Pięta
(mention)
→
Polish
Pięciak
(mention)
→
Polish
chwalipięta
(compound)
→
Polish
wiercipięta
(compound)