Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
tma
←
Polish
ćma
(cognate)
←
Slovak
tma
(cognate)
←
Proto-Slavic
*tьma
(inherited)
→
Czech
tmavý
(mention)
→
Polish
ćma
(cognate)
→
Polish
ćmy
(cognate)