अव्यवस्थित वर्णों को व्यवस्थित करके अर्थपूर्ण शब्द बनाएं एवं भिन्न शब्द ज्ञात कीजिए।

ROUWBR = BURROW, EDN = DEN and ETNS = NEST are homes of animals. ORFO = ROOF is a part of a building, not an animal's home, so it is the odd one out.