Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin somnus
← Proto-Indo-European *swep- (root)
← Proto-Indo-European *swépnos (inherited)
← Proto-Indo-European *swep- (mention)
← Proto-Italic *swepnos (inherited)
← Lithuanian sãpnas (cognate)

→ English somniloquous (mention)
→ English somnambulist (derived)
→ English somniferous (mention)
→ English insomnia (confix)
→ English somnolent (mention)
→ English somnifacient (derived)
→ English somnolence (derived)
→ English somnambulism (mention)
→ English somnambulation (mention)
→ English parasomnia (derived)
→ English sweven (cognate)
→ English somnipathy (derived)
→ English somnific (mention)
→ English semisomnia (mention)
→ English somniloquacious (derived)
→ English somnambulize (mention)
→ Old English swefn (cognate)
→ Assamese সপোন (cognate)
→ Assamese সপান (cognate)
→ Asturian sueñu (inherited)
→ Catalan son (inherited)
→ Danish søvn (cognate)
→ Dalmatian samno (inherited)
→ Spanish sueño (inherited)
→ Spanish sueño (mention)
→ Spanish soñolencia (derived)
→ Spanish somnolencia (derived)
→ French sommeil (inherited)
→ French somnolence (derived)
→ French somme (inherited)
→ French somnambule (derived)
→ Friulian sium (inherited)
→ Galician sono (inherited)
→ Hindi सपना (cognate)
→ Italian sogno (mention)
→ Italian sonno (inherited)
→ Italian insonne (mention)
→ Italian insonnia (mention)
→ Italian sonnolenza (derived)
→ Italian sonnolento (mention)
→ Italian sonnecchiare (derived)
→ Italian sonnacchioso (mention)
→ Latin -is (mention)
→ Latin somnium (mention)
→ Latin somnium (suffix)
→ Latin somnifer (suffix)
→ Latin somniculosus (suffix)
→ Latin somnulentus (suffix)
→ Latin somnolentus (suffix)
→ Latin somniger (affix)
→ Latin somnolentia (mention)
→ Latin numella (mention)
→ Ligurian séunno (inherited)
→ Ligurian sonìfero (mention)
→ Neapolitan suonno (inherited)
→ Old Norse svefn (cognate)