How many times is earth mentioned in bible?

The Bible mentions 3 earth ages: 1- The Old world (2Peter 2:5) which started by Adam, and Ended by Noah flood. 2- The present world (Galatians 1:4) from Noah flood till the coming of Jesus Christ to take his kingdom on earth. 3- The habitable world which is to come (Hebrews 2: 5) Which the Kingdom Jesus will take on earth according to prophets.