Terminology:

Name	Description
Stream	A structure that would produce Item when asked
Parser	Something that will check that Item produced by Stream are correct
Context	A structure that will manage Failure from Parser
Token	Represent what a Parser return for Success
Atom	A structure that contain information about the Failure or Error from a Parser
Element	Something, generally an enumeration, that will contain all different kind of Atom
Parsed	Enumeration that indicate result of a Parser
Parse	A trait that all Parser implement, used to use a Parser
Failure	Indicate a Parser didn't validate the input
Success	Indicate a Parser validate the input
Error	Indicate a Parser encounter an irrecoverable error.
Streaming	A trait that Stream implement to make their job
Item	Item produced by a Stream, generally just an u8
Span	A delimited part of the Stream
Contexting	A trait that all Context will implement, used to accumulate failure of Parser