breech birth vs breech presentation

breech birth and breech presentation both are nouns.

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

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

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

Other synonyms of breech birth include breech delivery.

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