start out
• embark on a venture or undertaking, especially a commercial one.
• "the company will start out with a hundred employees"
start up
• (of a machine or device) begin operating or being used.
• "he heard the sound of a car starting up"
• embark on a venture or undertaking, especially a commercial one.
• "I can't start up on my own without capital"
start-up
noun
• the action or process of setting something in motion.
• "the start-up of marketing in Europe"
