breech presentation vs breech birth

breech presentation and breech birth both are nouns.

Word	Noun	Adjective	Verb	Adverb
breech presentation	Yes	No	No	No
breech birth	Yes	No	No	No

As nouns, breech presentation and breech birth are synonyms defined as:

breech presentation and breech birth: delivery of an infant whose feet or buttocks appear first

Other synonyms of breech presentation include breech delivery.

breech presentation (noun)	breech birth (noun)
delivery of an infant whose feet or buttocks appear first	delivery of an infant whose feet or buttocks appear first