universe

(noun) everything that exists anywhere. Synonyms: existence, creation, world, cosmos, macrocosm. Examples: "They study the evolution of the universe." "The biggest tree in existence."

(noun) (statistics) the entire aggregation of items from which samples can be drawn. Synonyms: population. Example: "It is an estimate of the mean of the population."

(noun) everything stated or assumed in a given discussion. Synonyms: universe of discourse.