making known vs informing

making known and informing both are nouns.

Word	Noun	Adjective	Verb	Adverb
making known	Yes	No	No	No
informing	Yes	No	No	No

As nouns, making known and informing are synonyms defined as:

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