The difference between Completeness and Fulfillment

Completeness as a noun:

the state or condition of being complete

Completeness as a noun (logic):

The property of a logical theory that whenever a wff is valid then it must also be a theorem. Symbolically, letting T represent a theory within logic L, this can be represented as the property that whenever T \vDash \phi is true, then T \vdash \phi must also be true, for any wff φ of logic L.

Fulfillment as a noun:

The act of fulfilling.

Fulfillment as a noun:

The state or quality of being fulfilled; completion; realization.

Fulfillment as a noun:

The act of consummating a desire or promise.

Fulfillment as a noun (business):

The activities performed once an order is received to fulfill the order; packaging, distributing and shipping goods.