The common name for the plant Ricinus communis is the castor bean plant. This plant is native to Africa and the Middle East but is now found in many tropical and subtropical regions worldwide. The seeds of the castor bean plant produce castor oil, which has various uses, including medicinal and industrial applications. However, it's essential to note that the seeds contain ricin, a highly toxic compound, making them dangerous if ingested. Despite its toxicity, castor oil is safe for use when processed correctly and has been used for centuries for its laxative properties and to promote hair health.