Sisterhood (noun)

1. The state or relationship of being sisters.
2. A community of women who share a common profession, interests, or goals.
3. The solidarity among women who support each other.

Origin:

From sister +‎ -hood.

Examples:

1. The sisterhood among the nuns was unbreakable.
2. The sisterhood of the sorority was an important part of college life for many women.
3. The sisterhood of the activists was inspiring to all who saw it.
4. The sisterhood of the women in the movement was a powerful force for change.
5. The sisterhood of the mothers at the preschool was a source of comfort and support.