orpin vs live-forever

orpin and live-forever both are nouns.

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

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

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

Other synonyms of orpin include livelong, orpine, Sedum telephium.

orpin (noun)	live-forever (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