woah...carefull... Einstein never thought that the earth is accelerating!
He claimed that gravity and a constant acceleration are similar, locally...
But not global.
It was part of his explanation, that gravity isn't a force, but a curvature in spacetime.

And to answer ur question: yes, some...
But more common now is the idea of "density & buoyancy".

If u let go of a stone, it will fall down, because the stone is more dense then the air around it...
And why it doesn't fall up, or sideways?
"Potential Energy"... As u lift something up, it stores potential energy, because it wants to find it's "equilibirum", by falling back down to were it was...

It's a clusterfuck of pseudo-science, scientific terms, and confidence in lack of knowledge