bracket vs punctuation mark

bracket and punctuation mark both are nouns.

Word	Noun	Adjective	Verb	Adverb
bracket	Yes	No	Yes	No
punctuation mark	Yes	No	No	No

As nouns, punctuation mark is a hypernym of bracket; that is, punctuation mark is a word with a broader meaning than bracket:

bracket: either of two punctuation marks ([ or ]) used to enclose textual material
punctuation mark: the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases

Other hypernyms of bracket include punctuation.

As nouns, punctuation mark is a hypernym of bracket; that is, punctuation mark is a word with a broader meaning than bracket:

bracket: either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material
punctuation mark: the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases

Other hypernyms of bracket include punctuation.

bracket (noun)	punctuation mark (noun)
a support projecting from a wall (as to hold a shelf)	the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases
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