When you hover over palabras it says "words" and "speeches" so I thought either answer was correct but when I tried using speeches in my answer it was marked wrong. Now I'm confused.
The drop downs are not a list of correct answers, but more like multiple choice -- and sometimes the answer is "none of these." The computer database gives you a bunch of possibilities, but not all are correct in the context. For example "como" can means a few things, and all the meanings are listed even if "I eat" is the only correct answer.