On the contrary, A gloss on Rom. 1:29, 30, "Tale-bearers, backbiters [Douay: 'whisperers, detractors']" says: "Tale-bearers sow discord among friends; backbiters deny or disparage others' good points."
I answer that, The tale-bearer and the backbiter agree in matter, and also in form or mode of speaking, since they both speak evil secretly of their neighbor: and for this reason these terms are sometimes used one for the other. Hence a gloss on Ecclus. 5:16, "Be not called a tale-bearer [Douay: 'whisperer']" says: "i.e. a backbiter." They differ however in end, because the backbiter intends to blacken his neighbor's good name, wherefore he brings forward those evils especially about his neighbor which are likely to defame him, or at least to depreciate his good name: whereas a tale-bearer intends to sever friendship, as appears from the gloss quoted above and from the saying of Prov. 26:20, "Where the tale-bearer is taken away, contentions shall cease." Hence it is that a tale-bearer speaks such ill about his neighbors as may stir his hearer's mind against them, according to Ecclus. 28:11, "A sinful man will trouble his friends, and bring in debate in the midst of them that are at peace."
Reply Obj. 1: A tale-bearer is called a backbiter in so far as he speaks ill of another; yet he differs from a backbiter since he intends not to speak ill as such, but to say anything that may stir one man against another, though it be good simply, and yet has a semblance of evil through being unpleasant to the hearer.
Reply Obj. 2: An informer differs from a tale-bearer and a backbiter, for an informer is one who charges others publicly with crimes, either by accusing or by railing them, which does not apply to a backbiter or tale-bearer.
Reply Obj. 3: A double-tongued person is properly speaking a tale-bearer. For since friendship is between two, the tale-bearer strives to sever friendship on both sides. Hence he employs a double tongue towards two persons, by speaking ill of one to the other: wherefore it is written (Ecclus. 28:15): "The tale-bearer [Douay: 'whisperer'] and the double-tongued is accursed," and then it is added, "for he hath troubled many that were peace." _______________________
SECOND ARTICLE [II-II, Q. 74, Art. 2]
Whether Backbiting Is a Graver Sin Than Tale-bearing?
Objection 1: It would seem that backbiting is a graver sin than tale-bearing. For sins of word consist in speaking evil. Now a backbiter speaks of his neighbor things that are evil simply, for such things lead to the loss or depreciation of his good name: whereas a tale-bearer is only intent on saying what is apparently evil, because to wit they are unpleasant to the hearer. Therefore backbiting is a graver sin than tale-bearing.
Obj. 2: Further, he that deprives a man of his good name, deprives him not merely of one friend, but of many, because everyone is minded to scorn the friendship of a person with a bad name. Hence it is reproached against a certain individual [*King Josaphat] (2 Paralip. 19:2): "Thou art joined in friendship with them that hate the Lord." But tale-bearing deprives one of only one friend. Therefore backbiting is a graver sin than tale-bearing.
Obj. 3: Further, it is written (James 4:11): "He that backbiteth [Douay: 'detracteth'] his brother . . . detracteth the law," and consequently God the giver of the law. Wherefore the sin of backbiting seems to be a sin against God, which is most grievous, as stated above (Q. 20, A. 3; I-II, Q. 73, A. 3). On the other hand the sin of tale-bearing is against one's neighbor. Therefore the sin of backbiting is graver than the sin of tale-bearing.