small slam vs little slam

small slam and little slam both are nouns.

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

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

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

small slam (noun)	little 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