The answer to 'difference between sod and seed' is that sod is pre-grown grass that is cut into rolls or pieces and installed, while seed is individual grass seeds that are spread and grown from scratch. Sod provides an instant lawn, while seeding takes time to grow in and establish.
Sod is more expensive upfront but offers a quicker, more established lawn. Seeding is more affordable but requires more time, effort, and patience to grow in. Sod is best for quick results, while seeding works well for larger areas or if you have a limited budget.