deletion vs castration

deletion and castration both are nouns.

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

As nouns, castration is a hyponym of deletion; that is, castration is a word with a more specific, narrower meaning than deletion:

Other hyponyms of deletion include expurgation, censoring, censorship, erasure, expunction, expunging.

deletion (noun)	castration (noun)
the act of deleting something written or printed	neutering a male animal by removing the testicles
the omission that is made when an editorial change shortens a written passage	surgical removal of the testes or ovaries (usually to inhibit hormone secretion in cases of breast cancer in women or prostate cancer in men)
(genetics) the loss or absence of one or more nucleotides from a chromosome	the deletion of objectionable parts from a literary work
any process whereby sounds or words are left out of spoken words or phrases