A questions about "wipe" in CWM Recovery CWM Recovery has a many options for wipe and format partitions, and the options are:


wipe data/factory reset.
wipe cache partition.
format boot, system, data, cache, sdcard or sd-ext.
wipe dalvik cache.
wipe battery stats.


I wonder What is the difference between a wipe and format In terms of safe deletion of data?
How can I Completely Wipe Data from all partitions of phone device?
(I want do that before install a new ROM).
What is the overwriting Standard used in the wipe? ,thanx in advance.



Note: I don't know version of CWM Recovery but I'll use CWM Recovery from here:

https://forum.xda-developers.com/honor-4c/development/honor-4c-root-cwm-recovery-inshaalmirza-t3177770
I wonder What is the difference between a wipe and format In terms of safe deletion of data?
  


A wipe is, in any method, removes selected data from filesystem. It can be plain deletion or formatting the partition.

A format is a complete reset of a disk partition, by cleaning everything up and re-build its headers, inode records, file allocation tables, etc.


  
  How can I Completely Wipe Data from all partitions of phone device? (I want do that before install a new ROM).
  


Use the 1st option wipe data/factory reset. That's enough.


  
  What is the overwriting Standard used in the wipe? ,thanx in advance.
  


AFAIK there's no overwriting. It simply deletes files and/or formats partitions of your phone.