1. to warm (up), to heat (up)
2. to sit on (an idea, plan, etc.), to keep to oneself, to nurse, to mull over
3. to renew (an old friendship)
4. to take for oneself
1. to do, to carry out, to perform
2. to cause to become, to make (into), to turn (into)
3. to serve as, to act as, to work as
4. to wear (clothes, a facial expression, etc.)
5. to judge as being, to view as being, to think of as, to treat as, to use...