What’s a line segment that has both endpoints on the circumference

Congruent Circles- two circles with the same radius. Diameter – A segment that goes through the center of the circle, with both endpoints on the edge of the circle. Chord - A line segment that goes from one point to another on the circle's circumference. Tangent – a line that intersects a circle at only one point.

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.