Chakana & Chakaṇa

neuter the dung of animals Vin.i.202; Ja.iii.386 (ṇ); Ja.v.286; Ja.vi.392 (ṇ).

Vedic śakṛt & śakan; Gr. κόπρος; Sk. chagana is later, see Trenckner, Notes 62 n. 16