venesection vs phlebotomy

venesection and phlebotomy both are nouns.

Word	Noun	Adjective	Verb	Adverb
venesection	Yes	No	No	No
phlebotomy	Yes	No	No	No

As nouns, venesection and phlebotomy are synonyms defined as:

venesection and phlebotomy: surgical incision into a vein; used to treat hemochromatosis

venesection (noun)	phlebotomy (noun)
surgical incision into a vein; used to treat hemochromatosis	surgical incision into a vein; used to treat hemochromatosis