Nurture is a synonym of tend.
As verbs the difference between nurture and tend
is that
nurture is to nourish or nurse while
tend is to kindle; ignite; set on fire; light; inflame; burn or
tend can be (legal|old english law) to make a tender of; to offer or tender or
tend can be (with to) to look after (eg an ill person).
As a noun nurture
is the act of nourishing or nursing; tender care; education; training.