Guideline
Part of speech: noun
Definition: A non-specific rule or principle that provides direction to action or behaviour. A plan or explanation to guide one in setting standards or determining a course of action. A light line, used in lettering, to help align the text.
Guidance
Part of speech: noun
Definition: the act or process of guidingadvice or counselling on some topicany process or system to control the path of a vehicle, missile etc.