What is the difference between bridge connection and internet connection sharing?

I have an external WiFi card, and I want to use it to share internet with my PS4, since I get bad signal in my room. But in the Network settings there is the option to bridge the connection between the WiFi card and the Ethernet port and to share the internet connection with the Ethernet port, what is the difference?
And also, what happens if I share my internet connection from my external WiFi card with the internal one?

ethernet sharing

wifi sharing

bridge