Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
çheet
←
Old Irish
techt
(inherited)
←
Old Irish
téit
(mention)
←
Old Irish
do·icc
(mention)
←
Old Irish
do·tét
(mention)
→
Manx
neu-heet
(prefix)