right away vs directly

right away and directly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
right away	No	No	No	Yes
directly	No	No	No	Yes

As adverbs, right away and directly are synonyms defined as:

right away and directly: without delay or hesitation; with no time intervening

Other synonyms of right away include at once, forthwith, immediately, instantly, like a shot, now, straight off, straightaway.

right away (adverb)	directly (adverb)
without delay or hesitation; with no time intervening	without deviation
at once (usually modifies an undesirable occurrence)	in a forthright manner; candidly or frankly
	without anyone or anything intervening
	without delay or hesitation; with no time intervening