Docker: Docker Commands : Exhaustive

docker image pull <image>
docker image ls

docker container run <image> 
docker container run <image> --name  <containerName>

docker container run <image> -d

docker container run <image> -p HostPort:ContainerPort
docker container run -it <image> command

docker container 

docker container start <container>
docker container start -at <container>

docker container exec -it  <container>  command

docker container top

Would the following two commands create a port conflict error with each other?
NO ? Why ?
Each of below lines creates own containers

docker container run -p 80:80 -d nginx
docker container run -p 8080:80 -d nginx