I just found another cool online resource for intermediate + learners (or very determined beginners!)
I was looking for the difference between 作る and 造る (both pronounced つくる and both meaning “to make”) when I found this gem:
Not only similar or easily confused kanji/words, but similar ideas, similar objects etc, are covered on this site.
Don’t know your dugong from your manatee, or your 人種 from your 民族? No idea when to use 作る instead of 造る? Now you can waste time here finding out.