Can anyone with the Japanese game test to see if a word spoken in Japanese and its English translation make the same monster? It's been on my mind lately, and if they do make the same monster, then it might make a localization go faster.

Nope, they don't.

It's not likely that they would use the translated words in many cases anyway. For instance, all the Mocchis are made with Rice ball names which don't have a translation.

Pronunciation is very specific for the fixed words, anything that deviates from the word or its clarity will result in something other than intended.

Ok. It was on my mind for a while. What kind of monsters do English words make? Are they completely random?

Pretty much.

There are some reserved words that are english, but they don't work unless you speak them with a japanese accent...

Rememeber, the speech recognition program is made for japanese speakers.