The house represents people, the senate the states. Hence why senators are elected for 6 years, because states interests don't change that often and the house

The house represents people, the senate the states. Hence why senators are elected for 6 years, because states interests don't change that often and the house every 2, in order for the people to have as much influence as possible. Same reason all tax bills have to start in the house, why senators weren't elected by popular vote.