strenuosity vs vigour

strenuosity and vigour both are nouns.

Word	Noun	Adjective	Verb	Adverb
strenuosity	Yes	No	No	No
vigour	Yes	No	No	No

As nouns, vigour is a hypernym of strenuosity; that is, vigour is a word with a broader meaning than strenuosity:

Other hypernyms of strenuosity include energy, vigor, zip.

strenuosity (noun)	vigour (noun)
intense energy	active strength of body or mind
	an imaginative lively style (especially style of writing)
	forceful exertion