Ball

bal

(formal dance)

jaja

(testicle — see also testicle)

jaja

(mildly vulgar slang: nonsense)

jaja

(in plural — slang — courage)

jajo

(testicle — see also testicle)

kula

(solid or hollow sphere)

kula

(ballistics: a solid nonexplosive missile)

kula

(mathematics: set of points in a metric space lying within a given distance of a given point)

kłębek

(quantity of string, thread, etc., wound into a spherical shape)

motek

(quantity of string, thread, etc., wound into a spherical shape)

piłka

(object, generally spherical, used for playing games)