Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *ḱóm

→ English a- (derived)
→ English gain (derived)
→ English community (derived)
→ English comply (derived)
→ English galore (derived)
→ English custom (derived)
→ English costume (derived)
→ English epicene (derived)
→ English yearning (derived)
→ English consistent (derived)
→ English Hansard (derived)
→ English conglomerate (derived)
→ English conventicle (derived)
→ English hind (mention)
→ English consuetude (derived)
→ English Hanse (derived)
→ English consuetudo (derived(en/la))
→ English kastom (derived)
→ Afrikaans ge- (derived)
→ Old English ge- (derived)
→ Gaulish con- (derived)
→ Corsican cù (inherited)
→ Welsh cyfyng (inherited)
→ Welsh can- (mention)
→ German ge- (derived)
→ Middle Dutch gent (mention)
→ Greek κοινός (derived)
→ Middle English y- (derived)
→ Middle English conventicle (derived)
→ Spanish con (inherited)
→ Fala con (inherited)
→ French costume (derived)
→ French coutume (derived)
→ Middle French coustume (derived)
→ Old French costume (derived)
→ Old French consuetude (derived)
→ Old French coustume (derived)
→ Old French custume (derived)
→ Irish go (inherited)
→ Irish comh- (inherited)
→ Irish cúng (inherited)
→ Scottish Gaelic cumhang (inherited)
→ Galician costume (derived)
→ Old High German gi- (inherited)
→ Gothic 𐌲𐌰- (derived)
→ Ancient Greek καί (mention)
→ Ancient Greek σύν (mention)
→ Ancient Greek κοινός (affix)
→ Ancient Greek κατά (mention)
→ Icelandic gagn (derived(is/fo))
→ Icelandic gagn (derived)
→ Italian con (inherited)
→ Italian costume (derived)
→ Italian comune (mention)
→ Latin cum (inherited)
→ Latin contra (inherited)
→ Latin mecum (mention)
→ Latin tecum (mention)