shoulder vs scapula

shoulder and scapula both are nouns.

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

shoulder (noun)	scapula (noun)
a narrow edge of land (usually unpaved) along the side of a road	either of two flat triangular bones one on each side of the shoulder in human beings
the part of a garment that covers or fits over the shoulder
the part of the body between the neck and the upper arm
a ball-and-socket joint between the head of the humerus and a cavity of the scapula
a cut of meat including the upper joint of the foreleg

shoulder (verb)	scapula (verb)
push with the shoulders
carry a burden, either real or metaphoric
lift onto one's shoulders