truism(n = noun.communication) - an obvious truth;
is a kind of true statement, truth
has particulars: banality, bromide, cliche, commonplace, platitude

   An undoubted or self-evident truth; a statement which is pliantly true; a proposition needing no proof or argument; -- opposed to falsism. [1913 Webster]
"Trifling truisms clothed in great, swelling words." [1913 Webster]

truism, n.
1 an obviously true or hackneyed statement.
2 a proposition that states nothing beyond what is implied in any of its terms.

Derivative:
truistic adj.

N  maxim, aphorism, apothegm, apophthegm, dictum, saying, adage, saw, proverb, sentence, mot, motto, word, byword, moral, phylactery, protasis, axiom, theorem, scholium, truism, postulate, first principles, a priori fact, assumption (supposition), reflection, conclusion, golden rule, principle, principia, profession of faith, settled principle, accepted principle, formula, accepted fact, received truth, wise maxim, sage maxim, received maxim, admitted maxim, recognized maxim, true saying, common saying, hackneyed saying, trite saying, commonplace saying, aphoristic, proverbial, phylacteric, axiomatic, gnomic, as the saying goes, as the saying is, as they say.

N  meaninglessness, unmeaningness, scrabble, empty sound, dead letter, vox et praeterea nihil, a tale told by an idiot, full of sound and fury, signifying nothing, sounding brass and a tinkling cymbal, nonsense, utter nonsense, gibberish, jargon, jabber, mere words, hocus-pocus, fustian, rant, bombast, balderdash, palaver, flummery, verbiage, babble, baverdage, baragouin, platitude, niaiserie, inanity, flap-doodle, rigmarole, rodomontade, truism, nugae canorae, twaddle, twattle, fudge, trash, garbage, humbug, poppy-cock, stuff, stuff and nonsense, bosh, rubbish, moonshine, wish-wash, fiddle- faddle, absurdity, vagueness, boilerplate, clich_¬, unmeaning, meaningless, senseless, nonsensical, void of sense, inexpressive, unexpressive, vacant, not significant, insignificant, trashy, washy, trumpery, trivial, fiddle-faddle, twaddling, quibbling, unmeant, not expressed, tacit, inexpressible, undefinable, incommunicable.