exanthem vs skin eruption

exanthem and skin eruption both are nouns.

Word	Noun	Adjective	Verb	Adverb
exanthem	Yes	No	No	No
skin eruption	Yes	No	No	No

As nouns, exanthem and skin eruption are synonyms defined as:

exanthem and skin eruption: eruption on the skin occurring as a symptom of a disease

Other synonyms of exanthem include exanthema.

exanthem (noun)	skin eruption (noun)
eruption on the skin occurring as a symptom of a disease	eruption on the skin occurring as a symptom of a disease