escape vs Underground Railway

escape and Underground Railway both are nouns.

Word	Noun	Adjective	Verb	Adverb
escape	Yes	No	Yes	No
Underground Railway	Yes	No	No	No

escape (noun)	Underground Railway (noun)
the act of escaping physically	secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War
nonperformance of something distasteful (as by deceit or trickery) that you are supposed to do
an inclination to retreat from unpleasant realities through diversion or fantasy
an avoidance of danger or difficulty
a means or way of escaping
a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level
the discharge of a fluid from some container
a plant originally cultivated but now growing wild

escape (verb)	Underground Railway (verb)
issue or leak, as from a small opening
fail to experience
escape potentially unpleasant consequences; get away with a forbidden action
run away from confinement
flee; take to one's heels; cut and run
remove oneself from a familiar environment, usually for pleasure or diversion
be incomprehensible to; escape understanding by