Just to be a smartie but also for practical reasons to avoid confusions and mixups in the future:
CWM stands for ClockWorkManager (or maybe ClockWorkrecoveryManager) and is an app, running in your already working Android system.
CWR stands for ClockWorkRecovery, is not an app but a mini-OS in itself used to flash, wipe and perform other low-level actions.
You cannot "boot" or "start" into CWM with any key combination since it's just a regular app. You can very well boot into CWR by using said key combination though.
CWM is a piece of software made to manage the CWR ahead before booting into it from the Android OS.
Sony XPERIA Z (C6603) locked, rooted stock 4.1 | Samsung Galaxy S3 rooted stock 4.1
Asus Transformer Pad (TF300T) locked, stock 4.1 | Asus Transformer Pad (TF300TG) locked, rooted stock 4.0
In Repairs: Sony XPERIA T
Deprecated: Samsung Galaxy Note, HTC DesireZ, HTC 7, Nokia N900, HTC Magic, HTC Touch Pro, SonyEricsson XPERIA X1, HTC Touch Cruise, HTC Canary (Orange SPV) et al.
Originally Posted by Ryland Johnson
It is clear that this phone has an awful lot more artificial intelligence than some of its owners.