ball; sphere; bead (of sweat, dew, etc.); drop; ball (in sports); pitch (e.g. in baseball); pile (of noodles, etc.)
retrieving balls (during a practice session; in tennis, baseball, etc.); acting as ball boy; ball boy; player (in a tennis club, etc.) assigned the role of ball boy
course of a thrown ball; course of a hit ball (golf, tennis, etc.)
ball control; focus on the ball
billiards; pool; serial collisions (of cars)
Parasenecio farfarifolius var. bulbifer (variety of Indian plantain)