common unicorn plant vs elephant-tusk

common unicorn plant and elephant-tusk both are nouns.

Word	Noun	Adjective	Verb	Adverb
common unicorn plant	Yes	No	No	No
elephant-tusk	Yes	No	No	No

As nouns, common unicorn plant and elephant-tusk are synonyms defined as:

common unicorn plant and elephant-tusk: annual of southern United States to Mexico having large whitish or yellowish flowers mottled with purple and a long curving beak

Other synonyms of common unicorn plant include common devil's claw, devil's claw, Proboscidea louisianica, proboscis flower, ram's horn.

common unicorn plant (noun)	elephant-tusk (noun)
annual of southern United States to Mexico having large whitish or yellowish flowers mottled with purple and a long curving beak	annual of southern United States to Mexico having large whitish or yellowish flowers mottled with purple and a long curving beak