One of the synonyms for the word "acon" is "aconite", which is a perennial plant that is highly toxic and can cause fatal consequences upon ingestion. Another synonym for "acon" is "monkshood", which refers to the blue or purple hood-like flowers of the aconite plant. Other synonyms for this plant include "wolfsbane" and "queen of poisons". Despite its deadly nature, aconite has been used for medicinal purposes in ancient times and continues to be studied for its potential benefits. However, it is important to note that aconite should only be used under the guidance of a trained professional.