THE DIFFERENCE BETWEEN XI

What's the difference between:

1. A girl making her bed and a termite?
2. Being acquainted with a competitor and a baby?
3. A dog and a diamond?
4. A plant and an emigrant persecuted in his home country?

Answers:

1. One is doing chores and the other is chewing doors. 
2. Knew a rival and new arrival 
3. A dog is a man's best friend, and a diamond is a girl's best friend. 
4. One has xylem, the other seeks asylum.