marihuana vs Cannabis sativa

marihuana and Cannabis sativa both are nouns.

Word	Noun	Adjective	Verb	Adverb
marihuana	Yes	No	No	No
Cannabis sativa	Yes	No	No	No

As nouns, marihuana and Cannabis sativa are synonyms defined as:

marihuana and Cannabis sativa: a strong-smelling plant whose dried leaves can be smoked for a pleasant effect or pain reduction

Other synonyms of marihuana include ganja, marijuana.

marihuana (noun)	Cannabis sativa (noun)
the most commonly used illicit drug; considered a soft drug, it consists of the dried leaves of the hemp plant; smoked or chewed for euphoric effect	a strong-smelling plant whose dried leaves can be smoked for a pleasant effect or pain reduction
a strong-smelling plant whose dried leaves can be smoked for a pleasant effect or pain reduction