What is the distinction between franklin, lord of the manor and landed gentry in 14thc England

I’m very confused, as far as I understand franklins are freemen who own land and can hire employees, but what did they themselves do for a living? Did they still have to pay rents to a lord?

What differentiates a franklin and landed gentry and how does one become either class?

Also, is lord of the manor more of a title rather than a class? So does this mean a franklin could also be a manor lord?