formaldehyde vs methanal

formaldehyde and methanal both are nouns.

Word	Noun	Adjective	Verb	Adverb
formaldehyde	Yes	No	No	No
methanal	Yes	No	No	No

As nouns, formaldehyde and methanal are synonyms defined as:

formaldehyde and methanal: a colorless poisonous gas; made by the oxidation of methanol

formaldehyde (noun)	methanal (noun)
a colorless poisonous gas; made by the oxidation of methanol	a colorless poisonous gas; made by the oxidation of methanol