test paper vs examination paper

test paper and examination paper both are nouns.

Word	Noun	Adjective	Verb	Adverb
test paper	Yes	No	No	No
examination paper	Yes	No	No	No

As nouns, test paper and examination paper are synonyms defined as:

Other synonyms of test paper include exam paper, question sheet.

test paper (noun)	examination paper (noun)
paper impregnated with an indicator for use in chemical tests	a written examination
a written examination