Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Pictish
ᚋᚐᚊᚊᚑ
←
Proto-Celtic
*makʷos
(cognate)
←
Proto-Celtic
*makʷos
(link)
←
Proto-Celtic
*makkʷos
(link)