Answer:
4) Assets - Are important and can be anything valuable, that benefits you and your business.
5) Liabilities - Are the sum of money that is owed, and this is obviously not a good thing for you.
6) Owner's Equity - Is the money that you would actually have as a result of paying off all debts and converting all assets into spendable cash.
I gave my own take on what each are in order to explain them to you. Hope this makes sense :)