spider nevus vs spider angioma

spider nevus and spider angioma both are nouns.

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

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

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

Other synonyms of spider nevus include vascular spider.

spider nevus (noun)	spider angioma (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