As nouns the difference between bolt and padlock

is that bolt is a (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to the head, with a nut then threaded on the other end; a heavy machine screw while padlock is a detachable lock that can be used to secure something by means of a sliding or hinged shackle.

As verbs the difference between bolt and padlock

is that bolt is to connect or assemble pieces using a bolt while padlock is to lock using a padlock.

As an adverb bolt

is suddenly; straight; unbendingly.

As a proper noun Bolt

is {{surname|from=nicknames}.