Plectrophenax nivalis vs snowflake

Plectrophenax nivalis and snowflake both are nouns.

Word	Noun	Adjective	Verb	Adverb
Plectrophenax nivalis	Yes	No	No	No
snowflake	Yes	No	No	No

As nouns, Plectrophenax nivalis and snowflake are synonyms defined as:

Other synonyms of Plectrophenax nivalis include snow bunting, snowbird.

Plectrophenax nivalis (noun)	snowflake (noun)
white Arctic bunting	white Arctic bunting
	a crystal of snow