Those things aren't closely related biologically, so not a good analogy. "Human" isn't a precise biological category, it's just based on how the word is used, unlike homo sapiens. And some people, including scientists, use it to mean closely related species of hominids. Or hominids generally.
I agree? I didn't know close biological relation was a prerequisite for a good analogy, but I'll gladly oblige: vampire squid, velvet ant, slipper lobster, naked ape.
