pendant vs necklace

pendant and necklace both are nouns.

Word	Noun	Adjective	Verb	Adverb
pendant	Yes	Yes	No	No
necklace	Yes	No	No	No

pendant (noun)	necklace (noun)
branched lighting fixture; often ornate; hangs from the ceiling	jewelry consisting of a cord or chain (often bearing gems) worn about the neck as an ornament (especially by women)
an adornment that hangs from a piece of jewelry (necklace or earring)

pendant (adjective)	necklace (adjective)
held from above and hanging down