Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Irish lín
Proto-Celtic *līnom (inherited)
Proto-Celtic *līnom (inherited)
Proto-Indo-European *leyH- (derived)
Old Irish línaid (link)
Old Irish línmar (link)

Irish líon (inherited)
Irish líon (inherited)
Irish líon (mention)
Scottish Gaelic lìon (cognate)
Old Irish línmar (suffix)
Old Irish línaid (affix)