Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
gaj
←
Proto-Slavic
*gajь
(inherited)
→
Polish
gajowy
(suffix)
→
Polish
Gaj
(mention)
→
Polish
Gajos
(mention)
→
Polish
Gajor
(mention)
→
Polish
Gajoch
(mention)
→
Polish
Gajny
(mention)
→
Polish
Podgajny
(suffix)
→
Polish
gaik
(suffix)
→
Polish
Nagaj
(mention)
→
Polish
gajówka
(affix)