Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
avama
←
Finnish
avata
(cognate)
→
Estonian
au
(mention)
→
Estonian
ava
(mention)
→
Finnish
avata
(cognate)
→
Karelian
avata
(cognate)
→
Livvi
avata
(cognate)