paper2 [only before noun]
made of paper:
a paper bag
written or printed on paper:
The brochure is available in electronic and paper versions.
an expression meaning documents showing that you have passed particular examinations, used specially when you think that experience and knowledge are more important:
Paper qualifications are no guide to ability.
existing only as an idea but not having any real value:
paper profits (=a record of the value of something, that is not real until the thing is sold)