label vs direct

label is a noun but direct is not a noun.

Word	Noun	Adjective	Verb	Adverb
label	Yes	No	Yes	No
direct	No	Yes	Yes	Yes

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

Other hyponyms of label include call, address, be known as, call, know as, name, brand, denounce, mark, stigmatise, stigmatize.

label (noun)	direct (noun)
an identifying or descriptive marker that is attached to an object
a brief description given for purposes of identification
trade name of a company that produces musical recordings
a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction

label (adjective)	direct (adjective)
	direct in spatial dimensions; proceeding without deviation or interruption; straight and short
	(of a current) flowing in one direction only
	straightforward in means or manner or behavior or language or action
	similar in nature or effect or relation to another quantity
	in a straight unbroken line of descent from parent to child
	moving from west to east on the celestial sphere; or--for planets--around the sun in the same direction as the Earth
	lacking compromising or mitigating elements
	in precisely the same words used by a writer or speaker
	having no intervening persons, agents, conditions
	being an immediate result or consequence

label (verb)	direct (verb)
distinguish (an element or atom) by using a radioactive isotope or an isotope of unusual mass for tracing through chemical reactions	plan and direct (a complex undertaking)
distinguish (as a compound or molecule) by introducing a labeled atom	specifically design a product, event, or activity for a certain public
assign a label to; designate with a label	command with authority
pronounce judgment on	give directions to; point somebody into a certain direction
attach a tag or label to	put an address on (an envelope)
	point or cause to go (blows, weapons, or objects such as photographic equipment) towards
	intend (something) to move towards a certain goal
	guide the actors in (plays and films)
	lead, as in the performance of a composition
	take somebody somewhere
	cause to go somewhere
	direct the course; determine the direction of travelling
	govern or manage

label (adverb)	direct (adverb)
	without deviation