saiga vs Saiga tatarica

saiga and Saiga tatarica both are nouns.

Word	Noun	Adjective	Verb	Adverb
saiga	Yes	No	No	No
Saiga tatarica	Yes	No	No	No

As nouns, saiga and Saiga tatarica are synonyms defined as:

saiga and Saiga tatarica: goat-like antelope of central Eurasia having a stubby nose like a proboscis

saiga (noun)	Saiga tatarica (noun)
goat-like antelope of central Eurasia having a stubby nose like a proboscis	goat-like antelope of central Eurasia having a stubby nose like a proboscis