introduction vs making known

introduction and making known both are nouns.

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

As nouns, making known is a hypernym of introduction; that is, making known is a word with a broader meaning than introduction:

Other hypernyms of introduction include informing.

introduction (noun)	making known (noun)
the act of putting one thing into another	a speech act that conveys information
the act of beginning something new
the act of starting something for the first time; introducing something new
the first section of a communication
formally making a person known to another or to the public
a basic or elementary instructional text
a new proposal