deltoid muscle vs deltoid

deltoid muscle and deltoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
deltoid muscle	Yes	No	No	No
deltoid	Yes	Yes	No	No

As nouns, deltoid muscle and deltoid are synonyms defined as:

deltoid muscle and deltoid: a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm

Other synonyms of deltoid muscle include musculus deltoideus.

deltoid muscle (noun)	deltoid (noun)
a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm	a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm

deltoid muscle (adjective)	deltoid (adjective)
	triangular or suggesting a capital delta, with a point at the apex