conception (n)
design (n)
excogitation (n)
innovation (n)
invention (n)

Definition: the creation of something in the mind

invention (n)

Definition: the act of inventing

creation (n)
creative activity (n)

Definition: the human act of creating

invention (n)
innovation (n)

Definition: a creation (a new device or process) resulting from study and experimentation

devising (n)
fashioning (n)
making (n)

Definition: the act that results in something coming to be
Example: the devising of plans. the fashioning of pots and pans. the making of measurements. it was already in the making.