different between cissid vs cossid

English

cissid (plural cissids)

(zoology) Any beetle in the former family Cissidae, a synonym for the Ciidae.
Synonym: ciid

From Arabic ??????? (q??id, “courier”).

cossid (plural cossids)

(Anglo-Indian) A courier or messenger.
- 1834, ‘News from Candahar’, Accounts and Papers, 11.XL:
  On the 28th April a cossid arrived here from the Sirdars of Candahar, with letters from Dost Mahomed Khan, and Nawab Jubbar Khan.
- 1990, Peter Hopkirk, The Great Game (Folio Society 2010), page 221:
  As elsewhere, contact was maintained by means of fleet-footed messengers, known as cossids, who took their lives in their hands running the gauntlet with secret despatches concealed on them.

cossid (plural cossids)

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