tendency vs tendentious

tendency is a noun but tendentious is not a noun.

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

tendency (noun)	tendentious (noun)
a characteristic likelihood of or natural disposition toward a certain condition or character or effect
an attitude of mind especially one that favors one alternative over others
an inclination to do something
a general direction in which something tends to move

tendency (adjective)	tendentious (adjective)
	having or marked by a strong tendency especially a controversial one