scapula vs shoulder bone

scapula and shoulder bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
scapula	Yes	No	No	No
shoulder bone	Yes	No	No	No

As nouns, scapula and shoulder bone are synonyms defined as:

scapula and shoulder bone: either of two flat triangular bones one on each side of the shoulder in human beings

Other synonyms of scapula include shoulder blade.

scapula (noun)	shoulder bone (noun)
either of two flat triangular bones one on each side of the shoulder in human beings	either of two flat triangular bones one on each side of the shoulder in human beings