[Telepathic Intruder]

"In that case, the word ‘particles’ describes what, if not matter ?"

Matter and energy are both particle/waves, but fermions (matter) have mass while bosons (energy) do not. What separates them is that matter is subject to the Pauli exclusion principal while energy is not. And the root cause of this is supposedly the Higgs field. This is basic quantum physics, not that any of it is simple or easy to grasp. Feynman once said "If you think you understand quantum mechanics, you don't understand quantum mechanics".

[litehaus]

“Matter and energy are both particle/waves, but fermions (matter) have mass while bosons (energy) do not. “

The older I get, the less I know/understand.....Is that like saying - Ice, Steam and Water are all just H2O,or something ?

What sets of what constitute each of those things?