test vs testing

test and testing both are nouns.

Word	Noun	Adjective	Verb	Adverb
test	Yes	No	Yes	No
testing	Yes	No	No	No

test (noun)	testing (noun)
the act of testing something	the act of subjecting to experimental test in order to determine how well something works
any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc	the act of giving students or candidates a test (as by questions) to determine what they know or have learned
the act of undergoing testing	an examination of the characteristics of something
a hard outer covering as of some amoebas and sea urchins
trying something to find out about it
a set of questions or exercises evaluating skill or knowledge

test (verb)	testing (verb)
undergo a test
examine someone's knowledge of something
determine the presence or properties of (a substance)
achieve a certain score or rating on a test
put to the test, as for its quality, or give experimental use to
test or examine for the presence of disease or infection
show a certain characteristic when tested