bracket vs corbel

bracket and corbel both are nouns.

Word	Noun	Adjective	Verb	Adverb
bracket	Yes	No	Yes	No
corbel	Yes	No	Yes	No

As nouns, corbel is a hyponym of bracket; that is, corbel is a word with a more specific, narrower meaning than bracket:

bracket: a support projecting from a wall (as to hold a shelf)
corbel: (architecture) a triangular bracket of brick or stone (usually of slight extent)

Other hyponyms of bracket include angle bracket, angle iron, console, truss, modillion, sconce, shelf bracket.

bracket (noun)	corbel (noun)
a support projecting from a wall (as to hold a shelf)	(architecture) a triangular bracket of brick or stone (usually of slight extent)
either of two punctuation marks ([ or ]) used to enclose textual material
either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material
a category falling within certain defined limits