Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
astro-
→
Czech
astrologie
(affix)
→
Czech
astrolog
(affix)
→
Czech
astrofyzika
(affix)
→
Czech
astrofyzik
(affix)