Plants typically have multiple names. For example, these look like lupines, but are not. They are in the greater legume family, however. They provided a good blue dye, hence their name: false indigo.
And this dogwood is the Korean type, aka kousa* dogwood.
* How did autocorrect change this word to “mouse”? Or, why is that a match? This is not the same kind of multiple names as with the false indigo….