hognose snake vs puff adder

hognose snake and puff adder both are nouns.

Word	Noun	Adjective	Verb	Adverb
hognose snake	Yes	No	No	No
puff adder	Yes	No	No	No

As nouns, hognose snake and puff adder are synonyms defined as:

hognose snake and puff adder: harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed

Other synonyms of hognose snake include sand viper.

hognose snake (noun)	puff adder (noun)
harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed	large African viper that inflates its body when alarmed
	harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed