mantelpiece vs mantle

mantelpiece and mantle both are nouns.

Word	Noun	Adjective	Verb	Adverb
mantelpiece	Yes	No	No	No
mantle	Yes	No	Yes	No

As nouns, mantelpiece and mantle are synonyms defined as:

Other synonyms of mantelpiece include chimneypiece, mantel, mantlepiece.

mantelpiece (noun)	mantle (noun)
shelf that projects from wall above fireplace	a sleeveless garment like a cloak but shorter
	hanging cloth used as a blind (especially for a window)
	shelf that projects from wall above fireplace
	(zoology) a protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell
	the cloak as a symbol of authority
	the layer of the earth between the crust and the core
	anything that covers

mantelpiece (verb)	mantle (verb)
	cover like a mantle
	spread over a surface, like a mantle