This gets worse the further you get into Bunpro.
Early on in N5/N4 this is handled relatively well, most points have a few related grammar points and its generally always aware during review time when you’ve used one that was close but not quite right. But the further you progress into Bunpro the worse this gets and soon you find that the majority of grammar points are taught with apparently 0 related synonyms.
It gets frustrating later on as half of the time the review grammar points know of the synonym EVEN if its not listed as related, with the other half of the time the grammar point flat out marking synonyms as being wrong even if the meaning is almost identical.
This problem is especially bad with N3 onwards, a lot of the time if you have a N3 point but have progressed into N2, that N3 point is completely unaware of the new N2 synonyms you have learned and will flat out mark it wrong even when the correct word type (EG noun / verb) is used correctly but its just not the exact grammar point that is wanted.
This all culminates at N1 level where it is by far the worst and many grammar points are unaware of even other N1 points. I’ve ran into this example which forced me into making this thread.
These two grammar points are completely identical in meaning, the difference is the target they are used with. One of them straight mentions the other however these are still NOT listed as related, and reviews CAN completely flat out mark it wrong if you use one another instead of hinting.