Taxonomy is not for the common English language. For instance, Osteichthyes I'm pretty sure I can just type in as "fish", or possibly "bony fish" if I'm feeling particular -- but what on earth do I call lamprey? "Invertebrate chordate"? That's not exactly common speech....

Universal standard for application of common names fail UTTERLY once you reach the point that the things you're trying to name is no longer something people commonly encounter.

(Though I suspect that most people outside of my niche - most NORMAL people - just consider lamprey to be fish.)

(Yes I'm still working on this bit.)

(Did you know people use the term "worm" for earth worm, round worm, and polychaete worm when there's like more evolutionary divergence across those three categories than between us and like, sea urchins?)