Long-term memory is a bundle of sub processes.
Included among the Long-term memory processes are:
Episodic memory, the memory of our past;
Language memory with its vocabulary and grammar;
Semantic memory, our understanding of the world (concepts);
Motor-memory for motor patterns (the mixer);
and Implicit memory, in which some researchers also include motor memory.
Although they obviously communicate with each other, in many ways these processes seem to lead separate lives.
Episodic Memory: This is the memory of our past. Like in a movie we can envision the communities of our youth; see the faces of our family and friends and hear their voices. It is one of the joys of life that we take for granted.
NOTES: Here is a further discussion of Long-term Memory.