What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Synonymy vs Tautology - What's the difference?

synonymy | tautology |

As nouns the difference between synonymy and tautology

is that synonymy is (semantics) the quality of being synonymous; sameness of meaning while tautology is (uncountable) redundant use of words.

synonymy

English

(Synonym)

Noun

(synonymies)
  • (semantics) The quality of being synonymous; sameness of meaning.
  • A list or collection of synonyms, often compared and contrasted.
  • The study of synonyms.
  • A system of synonyms.
  • (botany) The collective synonyms (all the names referring to a particular taxon, except the correct name)
  • (botany) The state of not being a correct name, of being a synonym
  • In 1924 this name was reduced to synonymy .
  • (zoology) The collective synonyms (all the names referring to the same taxon, including the correct name)
  • Antonyms

    * antonymy

    See also

    * synonymia * synonym

    tautology

    English

    Noun

  • (uncountable) redundant use of words
  • It is tautology to say, "Forward Planning".
  • (countable) An expression that features tautology.
  • ''The expression "raze to the ground" is a tautology, since the word "raze" includes the notion "to the ground".
  • * 1946 , Bertrand Russell, History of Western Philosophy :
  • Pure mathematics consists of tautologies , analogous to ‘men are men’, but usually more complicated.
  • (countable, logic) A statement that is true for all values of its variables
  • Given a Boolean A, "A OR (NOT A)" is a tautology .
    A logical statement which is neither a tautology nor a contradiction is a contingency.
    A tautology''' can be verified by constructing a truth tree for its negation: if all of the leaf nodes of such truth tree end in X's, then the original (pre-negated) formula is a '''tautology .

    Antonyms

    * contradiction in terms * (in logic) contradiction * (literary) oxymoron

    Coordinate terms

    * (in logic) contingency, contradiction

    Derived terms

    * tautological * tautologically * tautologise * tautologist * tautologous * tautologously

    See also

    * pleonasm * redundancy * (Tautology) English words suffixed with -ology