intransitive verb
Definition: To originate or come from a particular source or place.
Example: The river stems from a small lake in the mountains.
noun
Definition: A slender part of a plant that supports leaves, flowers, or fruit, or the main part of a word to which other parts are added.
Example: The stem of the flower was strong enough to hold its weight.
transitive verb
Definition: To stop or slow down something, especially something negative, from continuing or increasing.
Example: The government is trying to stem the flow of illegal immigration.