Formation

3 clues
(Creation of) an organisation
Arrangement of things acting as a unit
Following the nine black squares in the center of the grid, a hint to five pairs of answers in this puzzle
Similar answers:
Abbreviation
Abbreviations
Aberration
Aberrations
Abjuration
Ablation
Abomination
Acceleration
Accreditation
Accumulation
Accusation
Accusations
Acestationzebra
Aciform
Acmecorporation
Acrossthenation
Actiniform
Activation
Activations
Actofabdication