Despite both room options having similar advantages, conservatories and sunrooms have three main differences that make them their own:
Materials: Conservatories will typically use more glass than sunrooms. Sunrooms will have opaque or solid roofs, while conservatories have all-glass roofs.
Purpose: These rooms have a slight difference in purpose. Conservatories can be great for growing plants, while sunrooms are solely an additional living space. Conservatories can also be used as an additional living space with the right climate control features.
Sunlight: A conservatory will allow more sunlight inside than a sunroom because of design and materials.