Which two features are present on Magento Open Source?

According to the Adobe Commerce Merchant Documentation, fixed product tax and page builder are two features that are available on both Magento Open Source and Adobe Commerce. RMA and gift wrapping are features that are exclusive to Adobe Commerce.

References: https://docs.magento.com/user-guide/tax/fixed-product-tax.html https://docs.magento.com/user-guide/cms/page-builder.html https://docs.magento.com/user-guide/sales/rma-configure.html https://docs.magento.com/user-guide/sales/gift-options.html