Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
droch
←
Proto-Celtic
*drukos
(inherited)
←
Old Irish
droch
(inherited)
→
Irish
droch-
(cognate)
→
Scottish Gaelic
math
(link)
→
Scottish Gaelic
droch shùil
(mention)
→
Scottish Gaelic
droch-chliùiteach
(mention)