Raynaud's sign vs acrocyanosis

Raynaud's sign and acrocyanosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Raynaud's sign	Yes	No	No	No
acrocyanosis	Yes	No	No	No

As nouns, Raynaud's sign and acrocyanosis are synonyms defined as:

Raynaud's sign and acrocyanosis: cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion

Raynaud's sign (noun)	acrocyanosis (noun)
cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion	cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion