Here are the rules that will help us learn how to use ‘ran out’ vs. ‘out of’.

(a) Out of
– No longer in a stated place or condition.
Ex: An apple rolled out of the bag.
– Used to show what something is made from
Ex. The dress was made out of velvet.
– Used to show the reason why someone does something:
Ex. I took the job out of necessity because we had no money left.
Source: Cambridge Dictionary
(b) Ran out
– To use something completely so that nothing is left
Ex. He just ran out of ideas.
Source: Cambridge Dictionary
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