reconnoitring vs reconnaissance

reconnoitring and reconnaissance both are nouns.

Word	Noun	Adjective	Verb	Adverb
reconnoitring	Yes	No	No	No
reconnaissance	Yes	No	No	No

As nouns, reconnaissance is a hypernym of reconnoitring; that is, reconnaissance is a word with a broader meaning than reconnoitring:

reconnoitring: exploring in order to gain information
reconnaissance: the act of reconnoitring (especially to gain information about an enemy or potential enemy)

Other hypernyms of reconnoitring include reconnaissance mission.

reconnoitring (noun)	reconnaissance (noun)
exploring in order to gain information	the act of reconnoitring (especially to gain information about an enemy or potential enemy)