id·i·om
Synonyms: phrase.
Usage: The foreigner was utterly confused when his American host handed him an umbrella and told him it was “raining cats and dogs,” an idiom meaning that it is raining heavily.
Synonyms: maintenance, sustainment, sustenance, upkeep.
Usage: In her heart, as in his, there gnawed ever an all-devouring hunger to work land of their own, a fervent aspiration to establish a solid basis of self-sustentation upon which their children might build.