Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
naoi
←
Breton
nav
(cognate)
←
Proto-Celtic
*nawan
(inherited)
←
Welsh
naw
(cognate)
←
Manx
nuy
(cognate)
←
Proto-Indo-European
*h₁néwn̥
(inherited)
←
Old Irish
noí
(inherited)
→
Manx
nuy
(cognate)