Final answer:
The slip of paper symbolizes the tradition of the lottery in Shirley Jackson's 'The Lottery', and the oldest man, Old Man Warner, can be described as traditional and stubborn.
Step-by-step explanation:
The key symbol that represents the tradition of the lottery in Shirley Jackson's 'The Lottery' is the slip of paper. This small piece of paper signifies the randomness and the cruel fate awaiting the 'winner' of the lottery.
The oldest man in town, a character often highlighted in discussions of the story, is named Old Man Warner. Two adjectives that would describe Old Man Warner are traditional and stubborn, as he staunchly defends the lottery and resists change.