struggle vs scramble

struggle and scramble both are nouns.

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

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

Other hyponyms of struggle include duel, scuffle, joust, tilt.

As verbs, struggle and scramble are synonyms defined as:

Other synonyms of struggle include clamber, shin, shinny, skin, sputter.

struggle (noun)	scramble (noun)
strenuous effort	rushing about hastily in an undignified way
an energetic attempt to achieve something	an unceremonious and disorganized struggle
an open clash between two opposing groups (or individuals)

struggle (verb)	scramble (verb)
be engaged in a fight; carry on a fight	make unintelligible
to exert strenuous effort against opposition	bring into random order
climb awkwardly, as if by scrambling	stir vigorously
make a strenuous or labored effort	to move hurriedly
	climb awkwardly, as if by scrambling