What's the difference between appalling and nefandous?

Appalling

Definition:

(p. pr. & vb. n.) of Appall
(a.) Such as to appall; as, an appalling accident.

Example Sentences:

(1) He said he was appalled by the player's accusations and plans to meet with Martin on Wednesday at an undisclosed location.
(2) It's that he habitually abuses his position by lobbying ministers at all; I've heard from former ministers who were astonished by the speed with which their first missive from Charles arrived, opening with the phrase: "It really is appalling".
(3) No one condones what happened in the 70s, but I think this is pretty appalling."
(4) While Brown – finally fit again after appalling knee trouble that very nearly ended his career –began a home game for the first time since January 2012, Poyet only found room in Sunderland's starting XI for five of the 14 summer signings secured by Roberto De Fanti, the club's director of football.
(5) It would also throw a light on the appalling conditions in which cheap migrant labour is employed to toil Europe's agriculturally rich southern land.
(6) On the back of some appalling results, including a six-game losing streak, the atmosphere at the game against Cardiff was toxic and the abuse intensely personal.
(7) [The loan is] appalling, no one had any idea whatsoever,” said Elena Korka, a senior culture ministry policymaker involved in restitution efforts since 1986.
(8) The 1,400 victims are those who had actually experienced sexual exploitation.” Determined that no one could bat away her findings, she had produced a 153-page report that spelled out in plain language the appalling abuse suffered by children aged 10-16 in the South Yorkshire town between 1997 and 2013.
(9) Many supporters are neither leftist, nor admirers of Syriza’s anti-capitalist rhetoric, but Greeks appalled by the catastrophic effects of policies that have left 1.5 million unemployed, 3 million facing poverty and the vast majority unable to pay their bills.
(10) But up against the dislocation of the industrial revolution, ideas of citizenship had to change, as inspirational leaders appalled by the suffering of the new working class sought to transform a brutal economic free-for-all into a civilised society.
(11) It has shocked and appalled, but with the compulsive appeal of something like entertainment.
(12) And when S&P downgraded the US long-term credit rating from AAA to AA+, it was doing so for some sound reasons – because of the appalling immaturity of the Republican Tea Partiers in their negotiations over the debt ceiling.
(13) Despite its abundant natural resources and potential wealth, the figures on hunger in Congo are appalling.
(14) But the crowd at Bob Jones University did not seem to care for the journalism of the New York Times, or that Cruz senior has recently said that LGBT activists will try to “legalise pedophilia”, that it is “ appalling ” that Houston has a gay mayor, and that he has opined that President Obama is an “outright Marxist” who should go “back to Kenya” .
(15) The year since Jo Cox’s death has seen rapid political change around the world: unexpected election results, a rise in digital interference in democratic elections by foreign powers , and a spate of appalling terrorist attacks.
(16) It’s because of this power that most people in poverty are in work , and the state must pay billions to supplement their appalling wages.
(17) While acknowledging his appalling failings as a man, we also, surely, should not entirely blind ourselves completely to the many hugely interesting and important things that he did.
(18) Ivens's apology was issued after a meeting with Jewish community organisations including the Board of the Deputies of British Jews, which had complained to the Press Complaints Commission on Sunday, describing the cartoon as "appalling" and "all the more disgusting" for being published on Holocaust Memorial Day, "given the similar tropes levelled against Jews by the Nazis".
(19) Leyland regularly took to Twitter to draw attention to what she felt was an appalling miscarriage of justice.
(20) We are appalled that the government should use those who have made considerable personal and professional commitments to this country, and who enrich our own culture, as a negotiating chip.