mother-in-law's tongue vs Sansevieria trifasciata

mother-in-law's tongue and Sansevieria trifasciata both are nouns.

Word	Noun	Adjective	Verb	Adverb
mother-in-law's tongue	Yes	No	No	No
Sansevieria trifasciata	Yes	No	No	No

As nouns, mother-in-law's tongue and Sansevieria trifasciata are synonyms defined as:

mother-in-law's tongue and Sansevieria trifasciata: stemless plant having narrow rigid leaves often cultivated as a houseplant

Other synonyms of mother-in-law's tongue include snake plant.

mother-in-law's tongue (noun)	Sansevieria trifasciata (noun)
stemless plant having narrow rigid leaves often cultivated as a houseplant	stemless plant having narrow rigid leaves often cultivated as a houseplant
an evergreen plant with large showy dark green leaves; contains a poison that swells the tongue and throat hence the name