Contentment, n.
Etymology: [Cf. F. contentement. See Content, v. t.]
1. The state of being contented or satisfied; content. Contentment without external honor is humility. Grew. Godliness with contentment is great gain. 1 Tim. vi. 6.
2. The act or process of contenting or satisfying; as, the contentment of avarice is impossible.
3. Gratification; pleasure; satisfaction. [Obs.] At Paris the prince spent one whole day to give his mind some contentment in viewing of a famous city. Sir H. Wotton.
Shades of meaning
Fernald has no entry of its own for contentment; he lists it under happiness.
He lists it without comment; the entries above explain its neighbors.