Lithosphere:
The lithosphere includes the crust and the uppermost mantle, which is the hardness and rigid outer layer of the earth. However,the lithosphere is by the asthenosphere, the weaker,hotter, and deeper part of the upper mantle. Also,the lithospere is broken into tectonic plates.
Asthenospere:
The Asthenosphere is the upper layer of the earths mantle below the lithospere. Also,the asthenospere is the layer of earth that lies at the bottom. However,the astheosphere is a part of the upper mantle just below the Lithosphere that is involved in plate tectonic movments and adjustments. Also,of its high temperature, pressures keep it plastic, and it low . Also did you know,the waves pass slowly through the asthenosphere compared to the overlying lithosphere mantle, although the two are not exactly the same. Under the thin oceantic plates the asthenosphere is usually much closer to the seafloor surface, and at mid ocean ridge it rises to within a few kilometers of the ocean floor.