The difference between Cardinal and Cardinal number

Cardinal as an adjective:

Of fundamental importance; crucial, pivotal.

Cardinal as an adjective (nautical):

Of or relating to the cardinal directions (north, south, east and west).

Cardinal as an adjective:

Describing a "natural" number used to indicate quantity (e.g., one, two, three), as opposed to an ordinal number indicating relative position.

Cardinal as an adjective:

Having a bright red color (from the color of a Catholic cardinal's cassock).

Cardinal as a noun (Roman Catholic):

One of the officials appointed by the pope in the , ranking only below the and the , constituting the special college which elects the pope. (See Wikipedia article on Catholic cardinals.)

Cardinal as a noun:

Any of a genus of songbirds of the finch family, Cardinalis.

Cardinal as a noun:

Any of various related passerine birds of the family Cardinalidae (See Wikipedia article on cardinals) and other similar birds that were once considered to be related.

Cardinal as a noun (color):

A deep red color, somewhat less vivid than , the traditional colour of a Catholic cardinal's cassock. }}

Cardinal as a noun (math):

a indicating quantity, or the size of a set (e.g., one, two, three).

Cardinal as a noun (grammar):

a used to represent a cardinal number.

Cardinal as a noun:

(), a flowering plant.

Cardinal as a noun:

(), a freshwater fish.

Cardinal as a noun (historical):

A woman's short with a , originally made of scarlet cloth.

Cardinal as a noun (obsolete):

Mulled red wine.

Cardinal number as a noun:

A number used to denote quantity; a counting number; a cardinal.

Cardinal number as a noun (mathematics):

A generalized kind of number used to denote the size of a set, including infinite sets.

Cardinal number as a noun (grammar):

A word that expresses a countable quantity; a cardinal numeral.