effort vs attempt

effort and attempt both are nouns.

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

As nouns, effort and attempt are synonyms defined as:

effort and attempt: earnest and conscientious activity intended to do or accomplish something

Other synonyms of effort include endeavor, endeavour, try.

effort (noun)	attempt (noun)
earnest and conscientious activity intended to do or accomplish something	earnest and conscientious activity intended to do or accomplish something
use of physical or mental energy; hard work	the act of attacking
a notable achievement
a series of actions advancing a principle or tending toward a particular end

effort (verb)	attempt (verb)
	enter upon an activity or enterprise
	make an effort or attempt