Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
naisg
←
Breton
naskañ
(cognate)
←
Proto-Celtic
*nadsketi
(inherited)
←
Irish
nasc
(cognate)
←
Manx
naisht
(cognate)
←
Old Irish
naiscid
(inherited)
→
Scottish Gaelic
co-naisg
(prefix)
→
Scottish Gaelic
naisgear
(suffix)