Concurrency vs Parallelism from StackOverflow

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My english level slag, translation of the main purpose of self-collation deepen understanding. If it is unfortunate to mislead you, please forgive me. If you kindly remind me, you can leave a message directly below.
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Concurrency is when both tasks can start, run, and complete in overlapping time periods. It doesn ' t necessarily mean they ' ll ever both is running at the same instant. Eg. Multitasking on a single-core machine.
Concurrency refers to the two tasks that can start, run, and complete within a staggered period . Does not necessarily mean that even a task is running at the same instant. For example, multi-tasking on a single-core machine.

Parallelism is when tasks literally run at the same time, eg. On a multicore processor.
Parallelism refers to multiple tasks running at the same time by literal means. For example, perform tasks on multi-core processors.

Quoting Sun ' s multithreaded Programming Guide:
Citation<<Sun‘s Multithreaded Programming Guide>>

Concurrency:a condition that exists when at least, the threads is making progress. A more generalized form of parallelism that can include time-slicing as a form of virtual parallelism.
Concurrency: exists under the following conditions: At least two threads are in progress. Concurrency is included in a more generic parallel pattern, which is interpreted as virtual parallelism with time intervals.

Parallelism:a condition that arises when at least, the threads is executing simultaneously.
Parallelism: At least two threads are executing at the same time, under such conditions.

Another explanation of comparative image:
Rob usually talks about Go and usually addresses the question of Concurrency vs Parallelism in a visual and intuitive EXPL anation! Here's a short summary:

Task:let ' s burn a pile of obsolete language manuals! One at a time!
Task: Burn out a bunch of old language reference manuals. Sequential execution:

Concurrency:there is many concurrently decompositions of the task! One example:
Concurrency: Task decomposition, concurrent execution:

Parallelism:the previous configuration occurs in parallel if there is at least 2 gophers working at the same time or not .
At least two rats can work at the same time to be counted as parallel.

Confusion exists because dictionary meanings of both these words are almost the same:
Because the meaning of concurrency and parallelism is basically the same in a dictionary, it is normal to have doubts.

Concurrent:existing, happening, or done at the same time (dictionary.com)
Parallel:very similar and often happening at the same time (Merriam Webster).
Yet the They is used in computer and programming is quite different. Here is my interpretation:
However, they are very different when used in CS. Here is my explanation:
Concurrency:interruptability
Concurrency: can be interrupted.
Parallelism:independentability
Parallelism: no interdependent relationship.
Space is limited, more explanations can be found in the original, linked to the top.

Concurrency vs Parallelism from StackOverflow