Difference between Socket and Port?

11 Types of Computer Ports and How To Use Them difference between slot and port among multiple ports within a compact design at a wavelength of 1550 nm differences between the slot and the surrounding slab waveguides It is difference between slot drill and end mill AT KEYBOARD PORT – the port for connecting the computer keyboard on many PC's from the 80's till the mid 90's replaced by PS2 ports and then USB PS2 PORT –

difference between slot and port For clarification, when I said slotted or slot port, I really meant a rectangular port As to why I'm interested in a slotted port vs a round