live-forever vs orpin

live-forever and orpin both are nouns.

Word	Noun	Adjective	Verb	Adverb
live-forever	Yes	No	No	No
orpin	Yes	No	No	No

As nouns, live-forever and orpin are synonyms defined as:

live-forever and orpin: perennial northern temperate plant with toothed leaves and heads of small purplish-white flowers

Other synonyms of live-forever include livelong, orpine, Sedum telephium.

live-forever (noun)	orpin (noun)
perennial northern temperate plant with toothed leaves and heads of small purplish-white flowers	perennial northern temperate plant with toothed leaves and heads of small purplish-white flowers