informing vs inform

informing is a noun but inform is not a noun.

Word	Noun	Adjective	Verb	Adverb
informing	Yes	No	No	No
inform	No	No	Yes	No

informing (noun)	inform (noun)
a speech act that conveys information
to furnish incriminating evidence to an officer of the law (usually in return for favors)

informing (verb)	inform (verb)
	give character or essence to
	impart knowledge of some fact, state of affairs, or event to
	act as an informer