channel vs contact

channel and contact both are nouns.

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

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

Other hyponyms of channel include back channel, lens, inter-group communication, liaison, link, line of gab, patter, spiel.

channel (noun)	contact (noun)
a way of selling a company's product either directly or via distributors	the act of touching physically
a passage for water (or other fluids) to flow through	close interaction
a television station and its programs	(electronics) a junction where things (as two electrical conductors) touch or are in physical contact
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance	a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication
a path over which electrical signals can pass	a channel for communication between groups
(often plural) a means of communication or access	a communicative interaction
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	the physical coming together of two or more things
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 person who is in a position to give you special assistance
	the state or condition of touching or of being in immediate proximity

channel (verb)	contact (verb)
send from one person or place to another	be in or establish communication with
direct the flow of	be in direct physical contact with; make contact
transmit or serve as the medium for transmission