Board Thread:Wiki Discussions/@comment-25050491-20140611171717/@comment-4710047-20140611211746

@Elveonora Well, it's probably best not to assume that we have been told everything about chakra, its nature, and the chakra natures themselves. Look at chakra flow vs. elemental ninjutsu. For example, Earth Release: Earth Spear. While being used as ninjutsu, It's still technically simple chakra flow. The properties of earth (it's hardening capabilities) is different from the manifestation of earth that we see in a technique like the earth wall.

It's best to assume that there is more to chakra then simple manifestation of the elements. I wouldnt be surprised if water chakra flow resulted in one's sword being able to change shape or something along those lines.