Sureness
Part of speech: noun
Definition: The property of being sure, certainty. The property of being sure, deft, confident of ability. The result or product of being sure.
Assurance
Part of speech: noun
Definition: The act of assuring; a declaration tending to inspire full confidence; that which is designed to give confidence.The state of being assured; firm persuasion; full confidence or trust; freedom from doubt; certainty.Firmness of mind; undoubting, steadiness; intrepidity; courage; confidence; self-reliance.Excess of boldness; impudence; audacity; as, his assurance is intolerable.Betrothal; affiance.Insurance; a contract for the payment of a sum on occasion of a certain event, as loss or death. &hand; Recently, assurance has been used, in England, in relation to life contingencies, and insurance in relation to other contingencies. It is called temporary assurance, in the time within which the contingent event must happen is limited. See Insurance.Any written or other legal evidence of the conveyance of property; a conveyance; a deed. &hand; In England, the legal evidences of the conveyance of property are called the common assurances of the kingdom. Blackstone.
Example sentence: The very necessity of bringing our armament up to a certain level as rapidly as possible must place in the foreground the idea of as large returns as possible in foreign exchange and therewith the greatest possible assurance of raw material supplies, through exporting.