instantly vs directly

instantly and directly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
instantly	No	No	No	Yes
directly	No	No	No	Yes

As adverbs, instantly and directly are synonyms defined as:

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

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

instantly (adverb)	directly (adverb)
without delay or hesitation; with no time intervening	without deviation
without any delay	in a forthright manner; candidly or frankly
	without anyone or anything intervening
	without delay or hesitation; with no time intervening