Write and explain broadly the following about threads and Processes

1.Multithreading and Thread functionality

2.User-Level, Kernel-Level Threads and another Arrangements.

3.Linux Process and Thread Management and their tasks, threads and Namespace.

4. Android Process and Thread Management and their Applications, activities, Processes and Threads.

5. The similarities and comparison of Linux and Android process and threads( create a table at the end for better illustration).