Hi, Alberto, I don't really know Spanish, so I cannot exactly compare Chinese to it ( IF lony I could). In modern Chinese (Mandarin), words of --Everything, nothing, something, anything / Everybody, nobody, somebody, anybody-- are all put with phrases . It's the similar case in English actually. Everything<-- every thing, nothing<-- no thing, and so on: they are all compounds. Jessica is right about this matter( and I think you know it that): a language often lacks of equivalent words for another language. But then again, in archaic Chinese, there were two words which are somewhat similar to those in modern English: 或= somebody,something and 莫 = nobody, nothing.