Meaning of opposite, opposing, opposed

[Tamara]

Hi

based on these two opposite concepts,… bla-bla-bla…
based on these two opposing concepts,… bla-bla-bla…
based on these two opposed concepts,… bla-bla-bla…

To be honest, I cannot differ the meanings…

Could you comment the difference (if any)? (how those oppos... (s) sound to you, in comparison.)
_________________
It’s impossible to learn swimming without entering the water…

[Alan]

Hi Tamar,

You say you cannot differentiate between the different meanings. I'll have a go:

[Tamara]

Ah!

Then I’ll stick to 'opposite concepts' (as they are fixed and 'static'), but
to 'opposing approaches' (for top-down vs bottom-up development methodologies).

Thank you, Alan!
_________________
It’s impossible to learn swimming without entering the water…