Difference between sidelink channel and V2X sidelink channel?

Question

Messages on sidelink (pc5) are unicasted or broadcasted in v2x communication? If broadcasting then which mechanism is used for broadcasting?

Answer 1

There is no v2x sidelink channel.
sidelik channel is used for both sidelink communication and V2X sidelink communication.

Comments

Then what is the difference b/w of having V5 and PC5 interface.
Is both are same or different?

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V5 : The reference point between the V2X applications in the UEs.
PC5: The reference point between the UEs used for user plane for ProSe Direct Communication for V2X Service and for D2D Communication.

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Thanks for the clarification. One more doubt.

What do you mean by ProSe Direct communciation for V2X service? is still we use ProSe App codes for V2X communication?
Could you please provide the spec reference which says about V2X application details like its message format and header it use.