Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
cagg
←
Manx
co-
(cognate)
←
Manx
cah
(mention)
←
Old Irish
cocad
(inherited)
←
Old Irish
com-
(mention)
←
Old Irish
cath
(mention)