What are lands and permanents in Magic: The Gathering and how do they interact with each other during gameplay?

In Magic: The Gathering, lands are cards that provide mana, which is used to cast spells and summon creatures. Permanents are cards that stay on the battlefield once played. Lands are a type of permanent. Players use lands to pay for the cost of playing other permanents and spells. Lands and permanents interact by providing resources and abilities that players can use strategically to win the game.