start
The word "start" is very common and can be used in both casual and formal situations. When using it as a verb for machines, it refers to the moment the engine begins to run. For events or activities, it marks the beginning of a process. Be careful with the meaning 'to jump' (sudden movement). In this case, it is usually used without an object; you don't "start something," you simply "start" because you are surprised.
💬Casual Conversation
David's on a warpath. When can you actually start the rebranding mocks?
Once I've had my caffeine. I'm totally burnt out.
Meanings
To begin the operation of a machine or engine.
"She helped him start the car on a cold morning."
To create or establish something new.
"The entrepreneurs decided to start a small boutique in the city center."
To begin happening, existing, or being used.
"The movie starts at eight o'clock sharp."