Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *ḱh₂d-

→ English accidence (root)
→ English accidentally (root)
→ English case (root)
→ English accident (root)
→ English chance (root)
→ English deciduous (root)
→ English cadaver (root)
→ English incident (root)
→ English occasion (root)
→ English occident (root)
→ English occidental (root)
→ English occiduous (root)
→ English decay (root)
→ English recidivist (root)
→ English cadenza (root)
→ English casual (root)
→ English casualty (root)
→ English decadent (root)
→ English Occident (root)
→ English recidivism (root)
→ English coincide (root)
→ English recidivate (root)
→ English cadence (root)
→ English cascade (root)
→ English cascade (derived)
→ English coincidence (root)
→ English decadence (root)
→ English incidence (root)
→ English caducous (root)
→ English recidivistic (root)
→ English recidivous (root)
→ Catalan caure (derived)
→ Spanish caer (derived)
→ French choir (derived)
→ Galician caer (derived)
→ Italian cadere (derived)
→ Latin cadaver (root)
→ Latin casus (root)
→ Latin casus (derived)
→ Latin decido (root)
→ Latin recido (root)
→ Latin cado (root)
→ Latin cado (derived)
→ Latin cecidi (mention)
→ Latin recidivus (root)
→ Latin excido (root)
→ Romanian cădea (derived)