acrolein vs propenal

acrolein and propenal both are nouns.

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

As nouns, acrolein and propenal are synonyms defined as:

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

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