Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Finnish
äkkiä
←
Estonian
äkki
(cognate)
←
Proto-Finnic
*äkkidä
(derived)
←
Ingrian
äkkii
(cognate)
←
Karelian
äkkie
(cognate)
←
Veps
äkkid
(cognate)
←
Votic
ättši
(cognate)
→
Estonian
äkki
(cognate)
→
Finnish
äkki-
(mention)