If we use neologism, we must use them properly, it's always another or more words in english to say the same. English is so rich in words, that you may use a lot of synonims. But if we want to use the latin or greek neologisms, we must use them with the correct gramatical rules. The spanish name "foro" is not a neologism, is the evolution of the ancient latin word, so, is not the same. Then, everywhere that you use curriculum, forum, index, or any other neologism, you must put them in plural as curricula, fora and indices, if you don't want to have problems, there are a lot of other real english words to do the same work.