Question

this convex and concave lens are same or not

Answer 1

Both are not same.concave  lens is thinner in the middle and convex lens is thicker in the middle.

Answer 2

they are not at all same.just look at the differences they have:
concave mirror 
has a curved in shape or structure.it goes in like a cave.
they are thinner in middle
they passing in rays spread out.i.e they diverge.
image formed is real and also virtual.
convex mirror
it has a bulging out structure
they are thicker in the middle
it will not let the rays diverge instead they converge.
the image formed is always virtual