Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
ко
←
Proto-Slavic
*kъ(n)
(inherited)
→
Irish
go
(cognate)
→
Russian
к
(mention)
→
Russian
соловейко
(suffix)
→
Russian
воронко
(suffix)
→
Old Irish
co
(cognate)