Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Icelandic lög
Proto-Germanic *lagą (inherited)
Proto-Germanic *ga- (mention)
Icelandic lag (mention)
Old Norse lǫg (inherited)

English law (cognate)
Icelandic lögregla (compound)
Icelandic lögfræði (affix)
Icelandic löggjöf (affix)
Icelandic löglegur (affix)
Icelandic löglega (affix)
Icelandic lögsækja (affix)