The two were crowned co-champions after the list of 25 final round words was exhausted. The eighth graders went head-to-head for 10 rounds before nailing their final words, according to the Associated Press.
Shivashankar's final word was "scherenschnitte," a German word meaning the art of paper cutting design. Other words she spelled in the head-to-head round include zimocca, Bruxellois, and myrmotherine.
Going last, Venkatachalam spelled the word "nunatak" - which is derived from Inuit and means a hill completely surrounded, but not covered, by glacial ice. He had previously tackled words such as paroemiology, nixtamal, and pyrrhuloxia in the championship round.