General Definition:
1. Of two things of equal height, quantity or status: for one to be lowered or reduced relative to the other so that it no longer has the same amount of height, quantity or status as the other.
As a Noun:
1. The change from a more important to a less important job or position in an organisation. English = demotion.
As a Verb or Adjective:
1. To reduce someone's rank; to give them a less important job in an organisation. English = demote.