Si: Of course Si seems remote to you. Ne is your dominant function. Si plays a more significant role than you think.
Ne: your top function.
Ni: also seems similar to Ne, but you don't really do this.
Te: seems similar to Ti, but you don't do this.
Ti: You do this.
Fe: You'll figure this one out, more or less.
Fi: No, you don't really do this.
Don't confuse skills with cognitive functions. (This is why the tests mostly suck, because skills are easily confused with the functions, and the tests can't ask the questions in such a way as to filter out the false positives.)