furfural vs aldehyde

furfural and aldehyde both are nouns.

Word	Noun	Adjective	Verb	Adverb
furfural	Yes	No	No	No
aldehyde	Yes	No	No	No

As nouns, aldehyde is a hypernym of furfural; that is, aldehyde is a word with a broader meaning than furfural:

furfural: a liquid aldehyde with a penetrating odor; made from plant hulls and corncobs; used in making furan and as a solvent
aldehyde: any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids

Other hypernyms of furfural include plant product.

furfural (noun)	aldehyde (noun)
a liquid aldehyde with a penetrating odor; made from plant hulls and corncobs; used in making furan and as a solvent	any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids