tour de force vs effort

tour de force and effort both are nouns.

Word	Noun	Adjective	Verb	Adverb
tour de force	Yes	No	No	No
effort	Yes	No	No	No

As nouns, effort is a hypernym of tour de force; that is, effort is a word with a broader meaning than tour de force:

Other hypernyms of tour de force include exploit, feat.

tour de force (noun)	effort (noun)
a masterly or brilliant feat	earnest and conscientious activity intended to do or accomplish something
	use of physical or mental energy; hard work
	a notable achievement
	a series of actions advancing a principle or tending toward a particular end