snake pit vs inferno

snake pit and inferno both are nouns.

Word	Noun	Adjective	Verb	Adverb
snake pit	Yes	No	No	No
inferno	Yes	No	No	No

As nouns, snake pit and inferno are synonyms defined as:

Other synonyms of snake pit include hell, hell on earth, hellhole, the pits.

snake pit (noun)	inferno (noun)
pejorative terms for an insane asylum	a very intense and uncontrolled fire
any place of pain and turmoil	any place of pain and turmoil