sacred mushroom vs plant organ

sacred mushroom and plant organ both are nouns.

Word	Noun	Adjective	Verb	Adverb
sacred mushroom	Yes	No	No	No
plant organ	Yes	No	No	No

As nouns, plant organ is a hypernym of sacred mushroom; that is, plant organ is a word with a broader meaning than sacred mushroom:

sacred mushroom: the button-shaped top of the mescal cactus; a source of psilocybin
plant organ: a functional and structural unit of a plant or fungus

sacred mushroom (noun)	plant organ (noun)
the button-shaped top of the mescal cactus; a source of psilocybin	a functional and structural unit of a plant or fungus