Japanese edit

For pronunciation and definitions of けいび – see the following entries.
警備
[noun] security guard
[noun] patrol
[noun] defense, guard, guarding, policing, security
[verb] keep guard, stand guard, defend
軽微
[adjective] insignificant, trivial, slight
[noun] in an insignificant way
(This term, けいび, is the hiragana spelling of the above terms.)