hydrazoic acid vs hydrogen azide

hydrazoic acid and hydrogen azide both are nouns.

Word	Noun	Adjective	Verb	Adverb
hydrazoic acid	Yes	No	No	No
hydrogen azide	Yes	No	No	No

As nouns, hydrazoic acid and hydrogen azide are synonyms defined as:

hydrazoic acid and hydrogen azide: a colorless explosive liquid that is volatile and poisonous and foul-smelling

Other synonyms of hydrazoic acid include azoimide, HN.

hydrazoic acid (noun)	hydrogen azide (noun)
a colorless explosive liquid that is volatile and poisonous and foul-smelling	a colorless explosive liquid that is volatile and poisonous and foul-smelling