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)