
right|thumb|Cain kills [[Abel, a fratricide illustrated by Gustave Doré ("And Cain talked with Abel his brother; and it came to pass, when they were in the field, that Cain rose up against Abel his brother and slew him.")]]
right|thumb|Cain kills [[Abel, a fratricide illustrated by Gustave Doré ("And Cain talked with Abel his brother; and it came to pass, when they were in the field, that Cain rose up against Abel his brother and slew him.")]]
Fratricide (; – the assimilated root of 'to kill, cut down') is the act of killing one's own brother.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).