venereal disease vs social disease

venereal disease and social disease both are nouns.

Word	Noun	Adjective	Verb	Adverb
venereal disease	Yes	No	No	No
social disease	Yes	No	No	No

As nouns, venereal disease and social disease are synonyms defined as:

venereal disease and social disease: a communicable infection transmitted by sexual intercourse or genital contact

venereal disease (noun)	social disease (noun)
a communicable infection transmitted by sexual intercourse or genital contact	a communicable infection transmitted by sexual intercourse or genital contact