Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
tunna
→
English
tun
(cognate)
→
Irish
tunna
(cognate)
→
Icelandic
bylur hæst í tómri tunnu
(mention)