Based on eras, new words formed by adding one letter at the beginning or end:
a - aers b - areas c - bares d - baser e - bears f - saber g - sabre h - acres i - cares j - carse k - escar l - races m - scare n - serac o - dares p - dears r - rased s - reads t - erase u - saree v - fares w - fears x - safer y - agers z - gears
