testing vs test

testing and test both are nouns.

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

testing (noun)	test (noun)
the act of subjecting to experimental test in order to determine how well something works	the act of testing something
the act of giving students or candidates a test (as by questions) to determine what they know or have learned	any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc
an examination of the characteristics of something	the act of undergoing testing
	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

testing (verb)	test (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