Proving evolution?

[Angrboda]

That sounds like an equivocation.

Any given theory -of- gravity may, at least potentially, end up being proven false..but it would not be possible to prove that gravity were false.

Does this also sound like an equivocation? I think Nudger made a reasonably clear distinction between the theory of evolution and evolution.

The term biological evolution is using 'evolution' in a more limited sense than the sense in which evolution simply means 'change'. They are two distinct meanings/senses, thus using one to comment on the other is an equivocation.

To use your example term, it would be akin to saying, "The theory of gravity is false because gravity means a matter having great weight and the theory of gravity has no defined weight."