orchotomy vs surgical incision

orchotomy and surgical incision both are nouns.

Word	Noun	Adjective	Verb	Adverb
orchotomy	Yes	No	No	No
surgical incision	Yes	No	No	No

As nouns, surgical incision is a hypernym of orchotomy; that is, surgical incision is a word with a broader meaning than orchotomy:

orchotomy: surgical incision into the testis to obtain material for analysis (as in cases of abnormally low sperm count)
surgical incision: the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)

Other hypernyms of orchotomy include incision, section.

orchotomy (noun)	surgical incision (noun)
surgical incision into the testis to obtain material for analysis (as in cases of abnormally low sperm count)	the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)