spider angioma vs spider nevus

spider angioma and spider nevus both are nouns.

Word	Noun	Adjective	Verb	Adverb
spider angioma	Yes	No	No	No
spider nevus	Yes	No	No	No

As nouns, spider angioma and spider nevus are synonyms defined as:

spider angioma and spider nevus: a dilation of superficial capillaries with a central red dot from which blood vessels radiate

Other synonyms of spider angioma include vascular spider.

spider angioma (noun)	spider nevus (noun)
a dilation of superficial capillaries with a central red dot from which blood vessels radiate	a dilation of superficial capillaries with a central red dot from which blood vessels radiate