direct vs navigate

direct is an adjective but navigate is not an adjective.

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

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

Other hyponyms of direct include dock, sheer, pull over, helm, crab, stand out, starboard, conn, pilot, channel, corner, tree, park.

direct (adjective)	navigate (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

direct (verb)	navigate (verb)
plan and direct (a complex undertaking)	act as the navigator in a car, plane, or vessel and plan, direct, plot the path and position of the conveyance
specifically design a product, event, or activity for a certain public	travel on water propelled by wind or by other means
command with authority	direct carefully and safely
give directions to; point somebody into a certain direction
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

direct (adverb)	navigate (adverb)
without deviation