destructive derivations

For no particular reason here are three English similes for 'destroy' and their Latin derivations:

• to annihilate comes from ad+nihil, to turn something into nothing.

• to obliterate comes comes from the Latin verb oblittero (to blot out or erase), which I presume comes in turn from ob+litterum and must have been originally used in the context of written records.

• to pulverise comes from pulvis (pulveris), and so means to turn something to dust.