Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
тꙑсѫщи
←
Proto-Slavic
*tysǫti
(mention)
→
Old Church Slavonic
тꙑсѫщьникъ
(suffix)