solidarity

noun2

1. •
   A bond of unity or agreement between individuals, united around a common goal or against a common enemy, such as the unifying principle that defines the labor movement; mutual support within a group.

   • A long time union member himself, Phil showed solidarity with the picketing grocery store workers by shopping at a competing, unionized store.
2. •
   Willingness to support another person in a difficult position or needs affection.

   • Only the solidarity provided by her siblings allowed Margaret to cope with her mother's harrowing death.