spotting vs discovery

spotting and discovery both are nouns.

Word	Noun	Adjective	Verb	Adverb
spotting	Yes	No	No	No
discovery	Yes	No	No	No

As nouns, discovery is a hypernym of spotting; that is, discovery is a word with a broader meaning than spotting:

Other hypernyms of spotting include find, uncovering.

spotting (noun)	discovery (noun)
the act of detecting something; catching sight of something	the act of discovering something
the act of spotting or staining something	a productive insight
	something that is discovered
	(law) compulsory pretrial disclosure of documents relevant to a case; enables one side in a litigation to elicit information from the other side concerning the facts in the case