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Cardinality vs Equinumerous - What's the difference?

cardinality | equinumerous |

As a noun cardinality

is of a set, the number of elements it contains.

As an adjective equinumerous is

having equal cardinality.

cardinality

English

(wikipedia cardinality)

Noun

(cardinalities)
  • (set theory) Of a set, the number of elements it contains.
    • The empty set has a cardinality of zero.
  • (data modeling) The property of a relationship between a database table and another one, specifying whether it is one-to-one, one-to-many, many-to-one, or many-to-many.

    • Synonyms

    * (in set theory) power

    Related terms

    * cardinal

    See also

    * aleph * cardinal number * multiplicity

    equinumerous

    English

    Adjective

    (-)
  • (mathematics) Having equal cardinality.