Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
kąt
←
Proto-Slavic
*kǫtъ
(inherited)
→
Polish
wielokąt
(suffix)
→
Polish
ostrokąt
(affix)
→
Polish
kątomierz
(affix)
→
Polish
kącik
(affix)