silky tamarin vs leoncita

silky tamarin and leoncita both are nouns.

Word	Noun	Adjective	Verb	Adverb
silky tamarin	Yes	No	No	No
leoncita	Yes	No	No	No

As nouns, leoncita is a hypernym of silky tamarin; that is, leoncita is a word with a broader meaning than silky tamarin:

silky tamarin: golden South American monkey with long soft hair forming a mane
leoncita: small South American marmoset with silky fur and long nonprehensile tail

Other hypernyms of silky tamarin include lion marmoset, lion monkey, tamarin.

silky tamarin (noun)	leoncita (noun)
golden South American monkey with long soft hair forming a mane	small South American marmoset with silky fur and long nonprehensile tail