2 vs deuce

2 and deuce both are nouns.

Word	Noun	Adjective	Verb	Adverb
2	Yes	Yes	No	No
deuce	Yes	No	No	No

As nouns, 2 and deuce are synonyms defined as:

2 and deuce: the cardinal number that is the sum of one and one or a numeral representing this number

Other synonyms of 2 include II, two.

2 (noun)	deuce (noun)
the cardinal number that is the sum of one and one or a numeral representing this number	one of the four playing cards in a deck that have two spots
	a word used in exclamations of confusion
	the cardinal number that is the sum of one and one or a numeral representing this number
	a tie in tennis or table tennis that requires winning two successive points to win the game

2 (adjective)	deuce (adjective)
being one more than one