As said before, the "locks" are "numbered", ikkyo meaning first technique up to gokyo, meaning 5th. You may be confused because sometimes different words are used for the position, ie 4 is shi where 4th is Yon? hence yonkyo. Some schools will also have a 6th technique, rokyo which others schools may call hiji kime osae (an elbow pin). I believe some schools even count up to nine locks, Kukyo!
But the others you name are merely descriptive names and have nothing to do with numbering eg. Iriminage = entering throw.
For a description of some common names, but don't be surprised if the terminology varies a little in your dojo. Funny thing is having been around a while and studied a few styles, you get to know what the parts of the words mean, and generally can work out what the name means even if its not what you call it in your dojo.