sphagnum moss vs peat moss

sphagnum moss and peat moss both are nouns.

Word	Noun	Adjective	Verb	Adverb
sphagnum moss	Yes	No	No	No
peat moss	Yes	No	No	No

As nouns, sphagnum moss and peat moss are synonyms defined as:

sphagnum moss and peat moss: any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat

Other synonyms of sphagnum moss include bog moss, sphagnum.

sphagnum moss (noun)	peat moss (noun)
any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat	any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat