fabrication

As nouns the difference between fabrication and asbuilt

is that fabrication is (uncountable) the act of fabricating, framing, or constructing; construction; manufacture while asbuilt is may refer to a field survey, construction drawing, 3d model, or other descriptive representation of an engineered project or a design derived from usage of the adjective asbuilt (see examples).

As an adjective asbuilt is

describing or representing the actual appearance, condition, structure or function of a building project or design fabrication.

As nouns the difference between fabrication and fabulation

is that fabrication is (uncountable) the act of fabricating, framing, or constructing; construction; manufacture while fabulation is the act or result of fabulating; a fabrication.