Audio/Video(A/V) ports are commonly found on most cameras, and allow for content on your camera to be displayed on a television or monitor. They can be identified by their circular shape, and are often found near the power and memory card ports.
Charging ports are found on almost all portable devices, and come in a variety of shapes and sizes. The two most common types are MicroUSB and Apple's Lightning connector.
Video ports, like A/V ports, are found on many devices and allow for content on your device to be displayed on a television or monitor. The most common types are HDMI, VGA, and Apple's Thunderbolt.