IMO, the term "human" is something of a catch-all phrase to describe a large number of physically identical life-forms throughout the Galaxy, but "Terran" is used specifically to describe humans that come from Earth or are descendant from there. In such a scenario, Betazoids and Deltans could have fit under the larger human classifications, but they had attributes that set them apart from average humans. As such, they join Vulcans, Andorians, and Klingons under the "humanoid" classification.
Just my way of looking at it...
I try to avoid using the terms: Humanoid, Klingonoid, Vulcanoid, <Insert Species Name Here>-noid.
That's more "Species-Specific" wording that I don't want to use.
I tried to create a Species Agnostic Term.
So I created a new term called "BiPaB".
Which is short for:
BiPaB(s) {Bi-(Pedal & Brachial)-oid(s)}
Here are original Latin Roots:
- Bi- meaning "Two of"
- Pedal pertains to Feet; so a "BiPed" is a creature with 2x Feet
- Brachial pertains to the Arm; so a "BiBrachial" is a creature with 2x Arms
- Combine the two, you have: BiPaB(s) {Bi-(Pedal & Brachial)-oid(s)} = BiPedaloid + BiBrachialoid
- Ergo a creature with 2x Feet & 2x Arms
- The implicit assumption is that goes along with the word are there is a Central Torso that connects to the:
\-> 2x Arms which implicitly have Hands with some amount of Fingers on the end
\-> 2x Feet which are attached to legs, that also has some amount of Toes on the end
\-> 1x Neck with Head Attached
\-> 1x Optional Tail (Evolution might've made it unnecssary, or the species might've retained it)
\-> Generally expected to walk up-right, although it's not a requirement
- -oid means "Resembling"