the meanings of these words haven't actually changed

Ah, now you 'beg the question'! In what resides the meaning - a dictionary, or received opinion changeable from time to time?

For my part, I would like to quote the bible:

`When _I_ use a word,' Humpty Dumpty said in rather a scornful
tone, `it means just what I choose it to mean--neither more nor
less.'

`The question is,' said Alice, `whether you CAN make words mean
so many different things.'

`The question is,' said Humpty Dumpty, `which is to be master--
that's all.'

Through the Looking Glass
http://ftp://uiarchive.cso.uiuc.edu/pub/etext/gutenberg/etext91/lglass18.txt

PS Loved the Almodovar, averyl