attempt vs struggle

attempt and struggle both are nouns.

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

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

attempt: earnest and conscientious activity intended to do or accomplish something
struggle: an energetic attempt to achieve something

As verbs, struggle is a hyponym of attempt; that is, struggle is a word with a more specific, narrower meaning than attempt:

attempt (noun)	struggle (noun)
earnest and conscientious activity intended to do or accomplish something	strenuous effort
the act of attacking	an energetic attempt to achieve something
	an open clash between two opposing groups (or individuals)

attempt (verb)	struggle (verb)
enter upon an activity or enterprise	be engaged in a fight; carry on a fight
make an effort or attempt	to exert strenuous effort against opposition
	climb awkwardly, as if by scrambling
	make a strenuous or labored effort