Sapling.com seems to put this succinctly: "Interest is the income received from bonds, bank CDs, saving accounts, bank money market accounts or loans made as a lender. Dividends are paid to shareholders of stock as a portion of the company profits and all investment company distributions are classified as dividends. Mutual funds, closed-end funds and Exchange-traded funds are the different investment options with dividends." https://www.sapling.com/6330162/dividends-vs-interest
If you don't have interest in excess of $10 from any one payor, you won't get a 1099-INT. (Many people haven't been getting them recently because interest rates have been so low. This is likely to change, depending on how much people have in interest-bearing accounts).
You have gotten a 1099-DIV, so be sure to enter the details from that in TT.
You can ignore any references to form(s) 1099-INT if you have not in fact received one.
