chain vs Caucasus

chain and Caucasus both are nouns.

Word	Noun	Adjective	Verb	Adverb
chain	Yes	No	Yes	No
Caucasus	Yes	No	No	No

chain (noun)	Caucasus (noun)
a series of (usually metal) rings or links fitted into one another to make a flexible ligament	a large region between the Black and Caspian seas that contains the Caucasus Mountains; oil is its major resource
a necklace made by stringing objects together	the mountain range in Caucasia between the Black Sea and the Caspian Sea that forms part of the traditional border between Europe and Asia
anything that acts as a restraint
a linked or connected series of objects
a series of things depending on each other as if linked together
(business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership
(chemistry) a series of linked atoms (generally in an organic molecule)
a series of hills or mountains
a unit of length

chain (verb)	Caucasus (verb)
fasten or secure with chains
connect or arrange into a chain by linking