bumph vs reading material

bumph and reading material both are nouns.

Word	Noun	Adjective	Verb	Adverb
bumph	Yes	No	No	No
reading material	Yes	No	No	No

As nouns, reading material is a hypernym of bumph; that is, reading material is a word with a broader meaning than bumph:

bumph: reading materials (documents, written information) that you must read and deal with but that you think are extremely boring
reading material: written material intended to be read

Other hypernyms of bumph include reading.

bumph (noun)	reading material (noun)
reading materials (documents, written information) that you must read and deal with but that you think are extremely boring	written material intended to be read