HOC superior to HOL due to the powers they have such as finical privilege, primary over legislation and power to dismiss the executive
laws and conventions which support the commons being superior to lords is parliament act 1911 and 1949 as it makes the lords not being able to vote on against any money bills
only commons can defeat the government in a confidence in motion
Salisbury convention prevents the lords voting against a winning party manifesto
reasonable time convention prevents the lords from delaying government business