Unity animating question

This is probably a stupid question but Ill ask anyways.

Can you animate the main object that doesnt have any bones with the same object that does in Unity?

Clarity please: what is this “main object”? If it’s some other model then you can have it move with another by parent/child relationships, or through manually coding it to move easy enough.

What I meant is that for eg. I have a toy that doesnt have joints, then I have that same toy with joints that I animated. I was just wondering if the animation would sync with the main toy that didnt have joints.

Both versions must be boned/rigged characters and separately play their animations.

Is there any bones specific naming convention? Like other game engines that require some convention?
Thanks

No
Unless your scripts want to access a specific child naturally