Orbit :

1. An orbit is a well defined circular path around the nucleus in which the electron revolves.

2. The maximum number of electrons in any orbit is given by 2n^2, where 'n' is the number of the orbit.

Orbital :

1. An orbital is the three dimensional space around the nucleus within which the probability of finding an electron is maximum.

2. The maximum number of electrons present in any orbital is two.
An orbit is a fixed path of an electron around the nucleus of an atom. Bohr's model of the hydrogen atom is based on the concept of orbit. An orbital is a region in three-dimensional space where the probability of finding the electron is maximum.