Can you explain elative, innessive, adessive, abessive, illative, active instructive, passive instructive, nominative, and partitive:) . Too make it easier on you, you can give me a website or you can explain it in your own words so i may understand. :D Ok, let's try. I sue word auto a car as an example and give singular and plural:  Nomines (nouns, pronouns, adjectives, numerals)   nominative  is basic form, auto/autot   partitive , is part of autoa/autoja, used like I scratched a car -> Naarmutin autoa versus I bought a car -> Ostin auton (in accusative)   inessive , this coressponds englis in something, autossa/autoissa   elative , this means from something, autosta/autoista   adessive , this means on something or next to something or by something depending on case, autolla/autoilla   abessive , this means without smth, autotta/autoitta   illative , this means into smth, autoon/autoihin    and     active instructive, passive instructive    I'm not sure do we understand this same. Nomines don't have passive/active, since they are not verbs. So  instructive  is way to tell how something was done. Like This is made by hands -> Tämä on  käsin  tehty, or with car example We came here by cars -> Tulimme autoin (very rare way to say, but correct, usually Finn says Tulimme autoilla using adessive)    Here's article in Wikipedia:   http://en.wikipedia.org/wiki/Instructive_case