propenal vs acrolein

propenal and acrolein both are nouns.

Word	Noun	Adjective	Verb	Adverb
propenal	Yes	No	No	No
acrolein	Yes	No	No	No

As nouns, propenal and acrolein are synonyms defined as:

propenal and acrolein: a pungent colorless unsaturated liquid aldehyde made from propene

propenal (noun)	acrolein (noun)
a pungent colorless unsaturated liquid aldehyde made from propene	a pungent colorless unsaturated liquid aldehyde made from propene