fabrication vs falsehood

fabrication and falsehood both are nouns.

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

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

Other hypernyms of fabrication include falsity, untruth.

fabrication (noun)	falsehood (noun)
the act of making something (a product) from raw materials	the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting
the act of constructing something (as a piece of machinery)	a false statement
writing in a fictional form
the deliberate act of deviating from the truth
a deliberately false or improbable account