choose vs assign

choose and assign both are verbs.

Word	Noun	Adjective	Verb	Adverb
choose	No	No	Yes	No
assign	No	No	Yes	No

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

choose (verb)	assign (verb)
pick out, select, or choose from a number of alternatives	select something or someone for a specific purpose
see fit or proper to act in a certain way; decide to act in a certain way	attribute or credit to
select as an alternative over another	decide as to where something belongs in a scheme
	attribute or give
	transfer one's right to
	give out
	make undue claims to having
	give an assignment to (a person) to a post, or assign a task to (a person)