tautology vs truth

tautology and truth both are nouns.

Word	Noun	Adjective	Verb	Adverb
tautology	Yes	No	No	No
truth	Yes	No	No	No

As nouns, truth is a hypernym of tautology; that is, truth is a word with a broader meaning than tautology:

Other hypernyms of tautology include true statement.

tautology (noun)	truth (noun)
useless and pointless repetition	the quality of being near to the true value
(logic) a statement that is necessarily true	a fact that has been verified
	a true statement
	conformity to reality or actuality