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Commonly used synonyms for principle are (originative) "source" or "beginning".

Commonly used synonyms for principle are (originative) "source" or "beginning".

For example, in some senses a "[[nature]]" or "subsistence" is the ''source'' of a thing's action, a "[[substance]]" is the source of a thing's materiality and an "[[essence]]" is the source of a thing's being.  And there are "accidental" principles that are not the source of a thing's properties but are simply able to co-exist as a source of something in the principled subject.  Likewise, there must be "non-accidental" or what might be called "[[property|propertorial]]" principles that ''are'' consequential on the existence of a thing in and of itself.

For example, in some senses a "[[nature]]" or "subsistence" is the ''source'' of a thing's action, a "[[substance]]" is the source of a thing's materiality and an "essence" is the source of a thing's being.  And there are "accidental" principles that are not the source of a thing's properties but are simply able to co-exist as a source of something in the principled subject.  Likewise, there must be "non-accidental" or what might be called "[[property|propertorial]]" principles that ''are'' consequential on the existence of a thing in and of itself.

===Principle, cause and element===

===Principle, cause and element===