Most mutual funds have four different structures that will impact the fees you will soon or later pay if you invest in mutual funds.
Each and everyone of these four structures is about different topic in the fund.
Is about the NAV per share rises and falls with the value of the fund.
This one is about paying a sales charge or commission to the broker or salesperson who sold the fund in addition to the NAV share price.
This one is about funds having a limited number of shares offered during an IPO, much as a company would.
No-load funds AKA no-transaction-fee funds
This last one is about charging no sales commissions for the purchase or sale of a fund share.