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 *sek-

→ English sect (root)
→ English Saxon (derived)
→ English saw (root)
→ English saw (derived)
→ English sex (root)
→ English sex (mention)
→ English insect (root)
→ English signal (root)
→ English ensign (root)
→ English section (root)
→ English sign (root)
→ English sax (root)
→ English sax (derived)
→ English designation (root)
→ English scythe (derived)
→ English dissect (root)
→ English sickle (root)
→ English sickle (cognate)
→ English signature (root)
→ English intersect (root)
→ English designate (root)
→ English shingle (mention)
→ English signage (root)
→ English insignia (root)
→ English sector (root)
→ English signum (root)
→ English signatory (root)
→ English signet (root)
→ English segment (root)
→ English segno (root)
→ English resect (root)
→ English biosignature (root)
→ English signate (root)
→ English designative (root)
→ English sgian dubh (root)
→ English sgian dubh (derived)
→ Old English saga (derived)
→ Old English secg (derived)
→ Old English seax (derived)
→ Old English sigþe (derived)
→ Middle Armenian ցին (mention)
→ Cebuano seks (root)
→ Cebuano eskudo (mention)
→ Corsican segà (inherited)
→ Crimean Tatar segment (derived)
→ Czech síci (derived)
→ Czech síct (derived)
→ Old Church Slavonic сѣщи (derived)
→ Old Church Slavonic исѣщи (derived)
→ German Säge (derived)
→ Lower Sorbian sec (root)
→ Lower Sorbian sec (derived)
→ Emilian sâs (derived)
→ Spanish escudo (mention)
→ Persian حاخشوک (mention)
→ Finnish sakset (root)
→ Faroese sag (derived)
→ Faroese saksur (root)
→ Faroese saksur (derived)
→ Irish sábh (derived)
→ Scottish Gaelic sgian-dubh (root)
→ Scottish Gaelic sgian-dubh (derived)
→ Galician sino (derived)
→ Galician cisco (derived)
→ Galician sasso (derived(gl/it))
→ Galician seita (inherited)
→ Galician seita (inherited)
→ Galician seixo (derived)
→ Galician seixo (derived(gl/pt))
→ Galician saxo (derived(gl/es))
→ Upper Sorbian syc (derived)
→ Indonesian seks (mention)
→ Indonesian seksi (root)
→ Icelandic sög (derived)
→ Italian scudo (root)
→ Italian scudo (mention)