vicuna vs Vicugna vicugna

vicuna and Vicugna vicugna both are nouns.

Word	Noun	Adjective	Verb	Adverb
vicuna	Yes	No	No	No
Vicugna vicugna	Yes	No	No	No

As nouns, vicuna and Vicugna vicugna are synonyms defined as:

vicuna and Vicugna vicugna: small wild cud-chewing Andean animal similar to the guanaco but smaller; valued for its fleecy undercoat

vicuna (noun)	Vicugna vicugna (noun)
small wild cud-chewing Andean animal similar to the guanaco but smaller; valued for its fleecy undercoat	small wild cud-chewing Andean animal similar to the guanaco but smaller; valued for its fleecy undercoat
a soft wool fabric made from the fleece of the vicuna
the wool of the vicuna