little slam vs small slam

little slam and small slam both are nouns.

Word	Noun	Adjective	Verb	Adverb
little slam	Yes	No	No	No
small slam	Yes	No	No	No

As nouns, little slam and small slam are synonyms defined as:

little slam and small slam: winning all but one of the tricks in a hand of bridge

little slam (noun)	small slam (noun)
winning all but one of the tricks in a hand of bridge	winning all but one of the tricks in a hand of bridge