Naming is hard, mainly because you have to agree on what subset of things are being named.

It appears hard because everyone has different taste on what specific word to use.

But that's a superficial distraction, obscuring the actual disagreement.

Everything is a borderless gray goo, and you need to figure out where to draw a border.

A name gives a shared handle to a concept.

But more important than the handle is what things it is attached to.

That is, what subset of gray goo is inside the concept's borders.

The border is fully implied, indirect, hard to see, but it matters the most in a name.

If you draw a border that is very much like another thing and adopt its name, you now can't change the border.

You draft off previous understanding, but in a way that also brings in semantics you didn't mean to include and are now confusing.

The pre-existing momentum helps people understand the name from the beginning, but also makes it harder to change.

A new name that is related but distinct allows you to formalize the border of what's in and out later and tweak it… but doesn't come with the pre-existing awareness of the name.