Ummm....not quite. "Con" as a prefix absolutely means the same in English or Spanish: connect, conjoin, contrived, conjugate, confer, continue, contribute, contact, consult...
For a prefix to mean "against" it needs three more letters and is also the same in English and Spanish: contrary, contraindicated, contraception, contrast....
I am bone weary of having "pescado" drilled into my brain when in a million years I will never order a pescado anything. What's the word for bacon? That's a word I could use. Heck, I'd eat una hamburguesa de crocodile or... rattlesnake even, before I would choke down a fish sandwich or burger.
I cannot stand the smell or the sight of it. It tastes like long-dead rot to me.
Three times in my life I have had fish that I thought, 'This is unpleasant, but I can choke it down without making a face.'
Every time that fish went from happily swimming around in the wild to cooked and on a plate within one hour. Everyone else is raving about it being the best fish they've ever had in their lives.
Such a delicacy is wasted on me, because I still thinks it's horrid, just... not as rotting-stinking-dead-flesh-horrific as usual.