Integer and Singleton

noun

• Any of the natural numbers (positive or negative) or zero.
  • usage: "an integer is a number that is not a fraction"
  • synonyms: whole number

(n.) A complete entity; a whole number, in contradistinction to a fraction or a mixed number.

noun

• A single object (as distinguished from a pair. )
• A set containing a single member.
• The playing card that is the only card in a suit held in a bridge hand as initially dealt. .

(n.) In certain games at cards, as whist, a single card of any suit held at the deal by a player; as, to lead a singleton.