The major similarities between rocks and minerals are as follows: 1. Both of them are geological substances which exists on earth. 2. Both are solid, inorganic and naturally-occuring substances. However, these are different in following ways: 1. Rocks are classified by geological processes whereas minerals are classified by chemical processes. 2. Rocks do not play any role in biological processes whereas minerals play definitive role. 3. Sometivmes, fosil remains are found embeded inside rocks while minerals don\'t have fossils. Solution The major similarities between rocks and minerals are as follows: 1. Both of them are geological substances which exists on earth. 2. Both are solid, inorganic and naturally-occuring substances. However, these are different in following ways: 1. Rocks are classified by geological processes whereas minerals are classified by chemical processes. 2. Rocks do not play any role in biological processes whereas minerals play definitive role. 3. Sometivmes, fosil remains are found embeded inside rocks while minerals don\'t have fossils..