let go vs withdraw

let go and withdraw both are verbs.

Word	Noun	Adjective	Verb	Adverb
let go	No	No	Yes	No
withdraw	No	No	Yes	No

As verbs, withdraw is a hyponym of let go; that is, withdraw is a word with a more specific, narrower meaning than let go:

let go (verb)	withdraw (verb)
release, as from one's grip	keep away from others
be relaxed	remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
	make a retreat from an earlier commitment or activity
	take back what one has said
	release from something that holds fast, connects, or entangles
	lose interest
	pull back or move away or backward
	remove (a commodity) from (a supply source)
	cause to be returned
	break from a meeting or gathering
	withdraw from active participation
	retire gracefully