THE DIFFERENCE BETWEEN XXXIV

What's the difference between:

1. Perseverance and obstinacy?
2. A hill and a pill?
3. A hungry man and a glutton?
4. A homeless man and a feather bed?
5. An estate auction and seasickness?
6. A farmer and a seamstress?

Answers:

1. A strong "will" and a strong "won't."
2. One's hard to get up and the other's hard to get down. 
3. One longs to eat and the other eats too long.
4. One's hard up and other's soft down.
5. One's the sale of effects, and the other the effects of a sail.
6. A farmer gathers what he sows and and a seamstress sews what she gathers.