Nourish (verb)

1. To provide with the food or other substances necessary for growth, health, and good condition.
2. To promote the growth or development of something.
3. To care for and support something.

Origin:

From latin word "nutrire" which means to feed, to rear.

Examples:

1. Eating a balanced diet will help to nourish your body.
2. She tried to nourish her plants with natural fertilizers.
3. The company is trying to nourish new ideas and creativity.
4. She tried to nourish their relationship by spending more time together.
5. The government is trying to nourish the economy by investing in new industries.