A practice for differentiating "by, through, in, with" goes like this: "He relaxes himself ____ exercise."

I do know that the blank should be filled with "through" or "by doing" through my feel of the language.

As for "with, in", I know clearly the reason why to disuse them here: with: usually followed by tangible tools in: usually followed by intangible and abstract nouns

But I can hardly clarify the difference between "by and through" under the meaning of "by way of".

Many thanks to whom can expound it!

  • 'With' would not be wrong in this context; it can mean 'by means of'. (NB "The reason why I should not use them.' If a building or machine is disused it has ceased to be used at all; disuse doesn't mean avoid using in a particular case.) Commented Jul 28, 2021 at 10:06
  • Thanks for your answer and note!
    – IAN
    Commented Jul 28, 2021 at 10:32


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