Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Irish co
Proto-Celtic *kom (inherited)
Proto-Celtic *kʷos (inherited)
German ge- (cognate)
German gegen (mention)
English gain- (cognate)
Spanish con (cognate)
Proto-Indo-European *ḱóm (inherited)
Russian ко (cognate)
Old Irish [[cosin|cos]]([[cossin|s]])[[cosin|in]] (link)
Old Irish [[cosa|cos]]([[cossa|s]])[[cosa|a]] (link)
Old Irish cosna (link)
Old Irish [[cosa|cos]]([[cossa|s]])[[cosa|a]] (link)
Old Irish cosse (link)
Old Irish (mention)
Old Irish ɔ (alter)
Old Irish (alter)
Old Irish abbreviation (alter)
Proto-Slavic *kъ(n) (cognate)

English galore (derived)
Irish go (inherited)
Irish chuig (mention)
Scottish Gaelic gun (inherited)
Scottish Gaelic gu (inherited)
Middle Irish co (inherited)
Old Irish cote (affix)
Old Irish nícon (mention)
Old Irish corruanat (mention)
Old Irish co rricci (compound)
Old Irish co ndicci (compound)