dependent vs dependency

dependent and dependency both are nouns.

Word	Noun	Adjective	Verb	Adverb
dependent	Yes	Yes	No	No
dependency	Yes	No	No	No

dependent (noun)	dependency (noun)
a person who relies on another person for support (especially financial support)	a geographical area politically controlled by a distant country
	the state of relying on or being controlled by someone or something else
	being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)

dependent (adjective)	dependency (adjective)
relying on or requiring a person or thing for support, supply, or what is needed
(of a clause) unable to stand alone syntactically as a complete sentence
addicted to a drug
contingent on something else
being under the power or sovereignty of another or others
held from above and hanging down