unsubdivided vs deltoid

unsubdivided is not a noun while deltoid is a noun.

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

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

unsubdivided (adjective)	deltoid (adjective)
(botany) of leaf shapes; of leaves having no divisions or subdivisions	triangular or suggesting a capital delta, with a point at the apex