The meaning of Perdh is ambiguous, so it is indicative of unforeseen and at the same time stability, which involves fear of making decisions, which is countered with a defiant attitude not to be crushed by fate.
The Indo-Euro root of Naudiz is nou = rubbing, friction, referring to the two sticks that primitive man used to bring about the necessary fire- use is expressed as magical and occult rune, especially in sorcery of love and sex, it is clearly mentioned in Norse poems- assoc with fire festivities like Beltaine, fire was lit ritually friction of a wheel and wood of oak. The wheel was known as belt, hence the name of Beltaine.
Indo-European root of rune name probably derived from man = man. Rune of aid, linked to Mannus, sired by Twisto, indicative of 'double' name, in English, which also begat Ambal, so that outside companion Mannus- legends say these two gods descend all the generations of men and women (great site- en espanol so used Google translate)