C#: What is the difference between Channel<T> and BlockingCollection<T>?

1// Channel
2var channel = Channel.CreateBounded<int>(100);
3await channel.Writer.WriteAsync(item);
4await foreach (var item in channel.Reader.ReadAllAsync())
5    Process(item);
6
7// BlockingCollection
8var collection = new BlockingCollection<int>(100);
9collection.Add(item);
10foreach (var item in collection.GetConsumingEnumerable())
11    Process(item);