papyrus vs Egyptian paper rush

papyrus and Egyptian paper rush both are nouns.

Word	Noun	Adjective	Verb	Adverb
papyrus	Yes	No	No	No
Egyptian paper rush	Yes	No	No	No

As nouns, papyrus and Egyptian paper rush are synonyms defined as:

papyrus and Egyptian paper rush: tall sedge of the Nile valley yielding fiber that served many purposes in historic times

Other synonyms of papyrus include Cyperus papyrus, Egyptian paper reed, paper plant, paper rush.

papyrus (noun)	Egyptian paper rush (noun)
a document written on papyrus	tall sedge of the Nile valley yielding fiber that served many purposes in historic times
tall sedge of the Nile valley yielding fiber that served many purposes in historic times
paper made from the papyrus plant by cutting it in strips and pressing it flat; used by ancient Egyptians and Greeks and Romans