Dear student,
Orbit is a well defined circular path around the nucleus in which an electron revolves and an orbit can accommodate electrons equal to 2n2 where n represents the principle quantum number.This term was given by Bohr and can be represented as K,L,M.....
While the orbitals are the region in space around the nucleus in which the probability of finding the electron is maximum.It also represents the 3-D motion of an electron around the nucleus.
Regards,