toil vs effort

toil and effort both are nouns.

Word	Noun	Adjective	Verb	Adverb
toil	Yes	No	Yes	No
effort	Yes	No	No	No

As nouns, effort is a hyponym of toil; that is, effort is a word with a more specific, narrower meaning than toil:

toil (noun)	effort (noun)
productive work (especially physical work done for wages)	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

toil (verb)	effort (verb)
work hard