pot odds and outs are 2 things, together they indicate if it's good to call, or better fold.
pot odds example:
say 2 players, pot = 90.
player before you bets 10
You have to pay 10 to get a chance to win a pot of 100, thats 10 to 1 pot odds.
Depending the outs (the cards that will give you the winning hand) you can calculate the ev if good to call, or implied odds (more $ to be added to the pot later if successful).
The youtube MIT course explains this in detail.