下げる vs. 下がる:
transitive vs. intransitive. The object of 下げる is the subject of 下がる.
下る vs. 下りる: With 下る you're just going down (a slope, a river, etc.), with 下りる there's some specific point you're going down to (down the stairs, to the bottom of a mountain, etc.).
下ろす vs. 下げる: with 下ろす you're taking something down (from a bookshelf), with 下げる you're hanging it (from your shoulder).
下ろす vs. 下りる: again, transitive vs. intransitive, but unlike with 下げる/下がる, you usually can't convert one to the other with a change of particles.
In addition to "be hung", 下がる can also mean a decrease in the level of something (price, temperature, noise, etc.); the 下げる you see in Core is a transitive example of the same.
All of the verbs also have uses that aren't covered by the above. When in doubt, look at what the verb is doing in the specific sentence.
Quote:I keep clicking <1 minute until they're the last cards to do and eventually I click <10 minutes and then 1 day.
Tools->Preferences->Learn ahead limit = 1 minute. You could also add a 60-minute step in the deck's options. Going straight from what is effectively <1 minute to a whole day is horrible, 10 minutes is borderline IMO.
Quote:I do not know the difference between these words and they mean nothing to me.
There's no point SRSing something you don't understand (unless you're explicitly ignoring the meaning and just going kanji->kana). Suspend any such cards until you find a way to understand them.
Also, forget the English definitions. They're only meant to help you, they're not what you're supposed to be remembering.
Edited: 2014-01-20, 6:19 am