Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English flax
Old English fleax (derived)
German Flachs (mention)
Proto-Germanic *flahsą (derived)
Old High German flahs (mention)
Proto-Indo-European *pleḱ- (derived)
Dutch vlas (mention)
Old Saxon *flahs (mention)

English flaxen (affix)
English toadflax (compound)
English flix (mention)
English flaxseed (compound)
English flaxlike (suffix)
English flaxweed (compound)
English flaxy (suffix)
English flax-dresser (affix)
English earthflax (compound)
English flaxcomb (compound)
English flaxbush (compound)
Luxembourgish Fluess (cognate)
Saterland Frisian Floaks (link)