@Override
	public boolean equals (Object obj) {
		if (this == obj) return true;
		if (obj == null) return false;
		if (getClass() != obj.getClass()) return false;
		Word other = (Word)obj;
		if (word == null) {
			if (other.word != null) return false;
		} else if (!word.equals(other.word)) return false;
		return true;
	}