Synonyms

Meanings of the given words:
Pious : Strongly believing in religion.
Pure : not mixed or adulterated with any other substance or material.
Pretentious : means showing off.
Clean : free from dirt, marks, or stains.
Devout : Having or showing deep religious feeling.
Therefore answer : Pious = Devout.

The synonym of ERROR is Blunder.

Strength : the quality or state of being physically strong.
Boldness : willingness to take risks and act innovatively; confidence or courage.
Warmth : the quality, state, or sensation of being warm; moderate heat.
Enthusiasm : intense and eager enjoyment, interest, or approval.
Vigour : physical strength and good health.

Synonym of Vigour is Strength

'Scintillating' means exciting. E.g. It was a superb script and a scintillating production. 'Warming' means pleasant to eat or drink. 'Touching' means making you feel sadness, sympathy etc. 'Glittering' means exiting. 'Smouldering' means to burn slowly with smoke but without flames.