The two major divisions of science?

Answer 1

Science is often thought to have two major divisions, which would be the hard sciences, such as physics, chemistry, astronomy, etc., and the soft sciences such as psychology, sociology, anthropology, etc. The terms hard and soft, in this case, do not refer to the relative degree of difficulty of understanding or advancing those sciences, but they refer rather to the mathematical precision and certainty of the resulting data and conclusions. Physics tends to be much more definite and precise than psychology is.