What is a concrete noun

Which three sentences in this excerpt from a dissertation upon a roast pig by charles lamb use sensory details? a)this period is not obscurely hinted at by their great confucius in the second chapter of his mundane mutations, where he designates a kind of golden age by the term cho-fang, literally the cooks' holiday b)china pigs had been esteemed a luxury all over the east, from the remotest periods that we read of c)while he was thinking what he should say to his father, and wringing his hands over the smoking remnants of one of those untimely sufferers, an odour assailed his nostrils, unlike any scent which he had before experienced d)a premonitory moistening at the same time overflowed his nether lip e)some of the crumbs of the scorched skin had come away with his fingers, and for the first time in his life (in the world's life indeed, for before him no man had known it) he tasted—crackling! again he felt and fumbled at the pig