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 *speḱ-

→ English species (root)
→ English respect (root)
→ English auspicious (root)
→ English spectrum (root)
→ English perspective (root)
→ English spice (root)
→ English spice (root(en/enm))
→ English perspicacious (root)
→ English specter (root)
→ English perspicacity (root)
→ English specious (root)
→ English spy (root)
→ English spy (derived)
→ English despise (root)
→ English aspect (root)
→ English despicable (root)
→ English spectacle (root)
→ English circumspect (root)
→ English skeptic (root)
→ English spectacular (root)
→ English perspicuous (root)
→ English especially (root)
→ English auspice (root)
→ English expect (root)
→ English suspicion (root)
→ English suspect (root)
→ English scope (root)
→ English scope (derived)
→ English -scope (root)
→ English conspicuous (root)
→ English specular (root)
→ English suspicious (root)
→ English espionage (root)
→ English inspect (root)
→ English specimen (root)
→ English conspectus (root)
→ English haruspex (root)
→ English speculum (root)
→ English speculate (root)
→ English especial (root)
→ Catalan espiar (derived)
→ Cebuano espiya (derived)
→ Central Kurdish سپاس (derived)
→ German spähen (mention)
→ Esperanto aspekti (root)
→ Spanish espía (derived)
→ Spanish espiar (derived)
→ Spanish conspicuo (root)
→ Spanish circunspecto (root)
→ Persian سپاس (derived)
→ French spectacle (root)
→ French épier (derived)
→ Galician espía (derived)
→ Galician espiar (derived)
→ Proto-Norse ᛋᛒᛡ (inherited)
→ Ancient Greek σκοπέω (root)
→ Ancient Greek σκοπέω (mention)
→ Ancient Greek σκέπτομαι (root)
→ Ancient Greek σκέπτομαι (mention)
→ Indonesian spion (root)
→ Indonesian skop (derived)
→ Ashokan Prakrit 𑀧𑀲𑀢𑀺 (root)
→ Ashokan Prakrit 𑀧𑀲𑀢𑀺 (mention)
→ Icelandic spá (derived)
→ Italian speciale (root)
→ Italian spiare (derived)
→ Italian specialmente (root)
→ Latin species (root)
→ Latin spectrum (root)
→ Latin scopus (mention)
→ Latin spectator (root)
→ Latin conspectus (root)
→ Latin auspex (root)
→ Latin perspicio (root)
→ Latin specio (root)
→ Latin specialis (root)
→ Latin circumspecto (root)
→ Latin specus (inherited)
→ Latin perspicax (root)
→ Latin conspicuus (root)