examination vs examine

examination is a noun but examine is not a noun.

Word	Noun	Adjective	Verb	Adverb
examination	Yes	No	No	No
examine	No	No	Yes	No

examination (noun)	examine (noun)
the act of examining something closely (as for mistakes)
the act of giving students or candidates a test (as by questions) to determine what they know or have learned
a detailed inspection of your conscience (as done daily by Jesuits)
a set of questions or exercises evaluating skill or knowledge
formal systematic questioning

examination (verb)	examine (verb)
	consider in detail and subject to an analysis in order to discover essential features or meaning
	question closely
	question or examine thoroughly and closely
	observe, check out, and look over carefully or inspect
	put to the test, as for its quality, or give experimental use to