return this.http.get('http://localhost:3000/words').map((res: Response) => res.json());

export class WordsComponent implements OnInit {
  words: Word[];
  private _productService;

    constructor(servicio : WordsService, public http: HttpClient) {
      this._productService = servicio;
      this.words = this._productService.getWords();

      console.log("Ver words " + JSON.stringify(this._productService.getWords()));


    }

     ngOnInit(): void {}

[
  {
    "id": 1,
    "name": "test",
    "translate": "prueba",
    "created_at": "2018-06-10T21:15:06.000Z",
    "updated_at": "2018-06-10T21:15:06.000Z"
  },
  {
    "id": 2,
    "name": "test-one",
    "translate": "prueba-uno",
    "created_at": "2018-06-10T21:15:22.000Z",
    "updated_at": "2018-06-10T21:15:22.000Z"
  }]