dandy fever vs dengue

dandy fever and dengue both are nouns.

Word	Noun	Adjective	Verb	Adverb
dandy fever	Yes	No	No	No
dengue	Yes	No	No	No

As nouns, dandy fever and dengue are synonyms defined as:

dandy fever and dengue: an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints

Other synonyms of dandy fever include breakbone fever, dengue fever.

dandy fever (noun)	dengue (noun)
an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints	an infectious disease of the tropics transmitted by mosquitoes and characterized by rash and aching head and joints