simple vs deltoid

simple and deltoid both are nouns.

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

simple (noun)	deltoid (noun)
a person lacking intelligence or common sense	a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
any herbaceous plant having medicinal properties

simple (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
having few parts; not complex or complicated or involved
easy and not involved or complicated
exhibiting childlike simplicity and credulity
unornamented
lacking mental capacity and subtlety
apart from anything else; without additions or modifications