bathroom tissue vs toilet paper

bathroom tissue and toilet paper both are nouns.

Word	Noun	Adjective	Verb	Adverb
bathroom tissue	Yes	No	No	No
toilet paper	Yes	No	No	No

As nouns, bathroom tissue and toilet paper are synonyms defined as:

bathroom tissue and toilet paper: a soft thin absorbent paper for use in toilets

Other synonyms of bathroom tissue include toilet tissue.

bathroom tissue (noun)	toilet paper (noun)
a soft thin absorbent paper for use in toilets	a soft thin absorbent paper for use in toilets