passage vs channel

passage and channel both are nouns.

Word	Noun	Adjective	Verb	Adverb
passage	Yes	No	No	No
channel	Yes	No	Yes	No

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

Other hyponyms of passage include adit, aisle, conduit, cul, cul de sac, dead end, fish ladder, passageway, right of way, shaft, throat.

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

passage: a path or channel or duct through or along which something may pass
channel: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

passage (noun)	channel (noun)
a journey usually by ship	a way of selling a company's product either directly or via distributors
the passing of a law by a legislative body	a passage for water (or other fluids) to flow through
the act of passing something to another person	a television station and its programs
the act of passing from one state or place to the next	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
a bodily reaction of changing from one place or stage to another	a path over which electrical signals can pass
a way through or along which someone or something may pass	(often plural) a means of communication or access
a path or channel or duct through or along which something may pass	a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels
a section of text; particularly a section of medium length	a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
a short section of a musical composition
the motion of one object relative to another

passage (verb)	channel (verb)
	send from one person or place to another
	direct the flow of
	transmit or serve as the medium for transmission