Oxymoron vs. Tautology

Difference Between Oxymoron and Tautology
Oxymoronnoun
A rhetorical figure in which incongruous or contradictory terms are combined, as in a deafening silence and a mournful optimist.
Tautologynoun
Needless repetition of the same sense in different words; redundancy.
Oxymoronnoun
A figure of speech in which two words or phrases with opposing meanings are used together intentionally for effect.
Tautologynoun
An instance of such repetition.
Oxymoronnoun
A contradiction in terms.
Tautologynoun
(Logic) A statement composed of simpler statements in such a way that it is logically true whether the simpler statements are factually true or false; for example, the statement Either it will rain tomorrow or it will not rain tomorrow.
Oxymoronnoun
conjoining contradictory terms (as in `deafening silence')
Tautologynoun
(uncountable) Redundant use of words, a pleonasm, an unnecessary and tedious repetition.
It is tautology to say, "Forward Planning".Tautologynoun
(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".Tautologynoun
In propositional logic: a statement that is true for all truth values of its propositional variables. In first-order logic: a statement that is true for all truth values of its Boolean atoms.
Tautologynoun
(logic) a statement that is necessarily true;
the statement `he is brave or he is not brave' is a tautologyTautologynoun
useless repetition;
to say that something is `adequate enough' is a tautology