Dear student
Total solar eclipse is the region of the earth which comes under the dark shadow and the sun becomes invisible, this is called total solar eclipse.
Whereas, annular solar eclipse is that when moon is too far from the earth that is in apogee position, the shadow of the moon does not reaches the earth and ends up in space itself .In such situation an edge of the sun disc remains visible .it appears like a ring.This is called annular solar eclipse.
Regards