What is the difference between incubator and accelerator?

The difference between an incubator and an accelerator is that an incubator is more focused on fleshing out business ideas and aiding startups every step of the way; meanwhile, an accelerator focuses on expediting the growth of existing businesses and companies with a minimum viable product. Incubators are known to have a more flexible time frame, ending when a startup can successfully pitch its product to consumers. The timeline of accelerators is significantly shorter, typically only spanning a few months. During this time, accelerators will provide startups with immense aid and resources, including mentorship, funding, and networking help.