lion marmoset vs leoncita

lion marmoset and leoncita both are nouns.

Word	Noun	Adjective	Verb	Adverb
lion marmoset	Yes	No	No	No
leoncita	Yes	No	No	No

As nouns, lion marmoset and leoncita are synonyms defined as:

lion marmoset and leoncita: small South American marmoset with silky fur and long nonprehensile tail

Other synonyms of lion marmoset include lion monkey, tamarin.

lion marmoset (noun)	leoncita (noun)
small South American marmoset with silky fur and long nonprehensile tail	small South American marmoset with silky fur and long nonprehensile tail