ADJ

radio, television/TV, video
cable, satellite, terrestrial
commercial, independent
movie, sports, etc.

VERB + CHANNEL

change (to), switch (to/over to), tune (in) to
I changed channels when the news came on

CHANNEL + VERB

broadcast
This channel broadcasts 24 hours a day

PREP

on a/the ~
There's an interesting documentary on Channel 4 tonight

ADJ

direct, indirect
Journalists always have indirect channels for getting information
formal, official
She first tried to get a doctor's certificate through official channels
informal
appropriate, conventional, normal, proper, right, usual
effective
an effective channel for communication
diplomatic
communication, distribution
worldwide distribution channels

VERB + CHANNEL

go through, use
If you want a visa, you will have to go through the proper channels
establish, open (up)
attempts to open up new channels of communication

PREP

through a/the ~
The government hopes to settle the dispute through diplomatic channels

PHRASES

a channel of communication, channels of distribution

ADJ

deep
narrow
drainage, irrigation
Irrigation channels supply the crops with water
river, water
The estate has fountains and water channels
shipping