castration vs expurgation

castration and expurgation both are nouns.

Word	Noun	Adjective	Verb	Adverb
castration	Yes	No	No	No
expurgation	Yes	No	No	No

As nouns, castration and expurgation are synonyms defined as:

castration and expurgation: the deletion of objectionable parts from a literary work

castration (noun)	expurgation (noun)
neutering a male animal by removing the testicles	the deletion of objectionable parts from a literary work
surgical removal of the testes or ovaries (usually to inhibit hormone secretion in cases of breast cancer in women or prostate cancer in men)
the deletion of objectionable parts from a literary work