Economy int l shipping vs standard int l shipping

what is Standard International Shipping - The eBay Community
i saw other people using StandardInternationalShipping, what exactly is that? does it provide tracking number, rate and delivery time? and who is handling the shipping? i saw another topic asked about the same quesetion, and someone gave an answer saying you are not using Global Service.

Economy International & Domesting Shipping - Economy Shipping
International & USA Domestic Shipping doesn't have to be expensive. Choose EconomyShipping for cost-effective, customs-cleared delivery of shipping packages.