There are three types of Expenses:
Expense
Check
bill
You can do either an Expense or a Check by click the quick create button then click the one you want. Checks are the only form that can be printed with a check number.
If your company uses Accounts payable for it's vendors then you can do step 1: Enter a Bill and then step 2: Pay Bills. This will affect your P&L at an accrual basis with entering bills.
In QBO when you work with the bank feeds it might be common to add an expense directly within the bank feeds. Make sure to match any prior entered expense, check or bill payment so that you don't duplicate your register.