fabrication vs penning

fabrication and penning both are nouns.

Word	Noun	Adjective	Verb	Adverb
fabrication	Yes	No	No	No
penning	Yes	No	No	No

As nouns, penning is a hypernym of fabrication; that is, penning is a word with a broader meaning than fabrication:

Other hypernyms of fabrication include authorship, composition, writing.

fabrication (noun)	penning (noun)
the act of making something (a product) from raw materials	the act of creating written works
the act of constructing something (as a piece of machinery)
writing in a fictional form
the deliberate act of deviating from the truth
a deliberately false or improbable account