tendency vs direction

tendency and direction both are nouns.

Word	Noun	Adjective	Verb	Adverb
tendency	Yes	No	No	No
direction	Yes	No	No	No

As nouns, direction is a hyponym of tendency; that is, direction is a word with a more specific, narrower meaning than tendency:

tendency: an attitude of mind especially one that favors one alternative over others
direction: a general course along which something has a tendency to develop

As nouns, direction is a hypernym of tendency; that is, direction is a word with a broader meaning than tendency:

Other hypernyms of tendency include way.

tendency (noun)	direction (noun)
a characteristic likelihood of or natural disposition toward a certain condition or character or effect	the act of managing something
an attitude of mind especially one that favors one alternative over others	the act of setting and holding a course
an inclination to do something	a general course along which something has a tendency to develop
a general direction in which something tends to move	the concentration of attention or energy on something
	something that provides direction or advice as to a decision or course of action
	a formal statement of a command or injunction to do something
	a message describing how something is to be done
	a line leading to a place or point
	the spatial relation between something and the course along which it points or moves