Understand that 'ennoble' can imply making something morally better, not just higher in status. The charity work helped to ennoble the company's public image.
Pro Tip 2/3
Metaphoric Use
'Ennoble' can be used metaphorically to describe enhancing inanimate objects or ideas. The artist's touch ennobled the simplicity of the rustic room.
Pro Tip 3/3
Community Perspective
It often denotes an action benefiting a group, rather than an individual alone. Her dedication to teaching ennobled the entire educational community.