Orphan process and zombie process noun explanation

Orphan process: One parent process exits, and one or more of its child processes are still running, then those child processes will become orphans. The orphan process will be adopted by the INIT process (process number 1) and the Init process completes the state collection for them.

Zombie Process: A process uses fork to create a child process, and if the child process exits, and the parent process does not call wait or waitpid to get state information for the child process, the process descriptor of the child process is still stored in the system. This process is called a zombie process.

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Orphan process and zombie process noun explanation