noun:an object, item, or entity that is not specifically named
She placed the small thing on the table.
noun:an action, activity, or event
The best thing to do is to apologize.
noun:a situation or matter of concern
There's another thing we need to discuss.
noun:used to express a lack of precision in referring to something
He has a thing about being late.
noun:a living creature or person
You poor thing, you look exhausted.
