What's the difference between pietism and pietistic?

Pietism

Definition:

• (n.) The principle or practice of the Pietists.
• (n.) Strict devotion; also, affectation of devotion.

Example Sentences:

• (1) Another influence was Pietism, a movement within Lutheranism that emphasised hard work and shunned worldly amusements.
• (2) The medicinal legalities of the Anhaltine territories developing under the influence of Enlightenment and Pietism and then characterized by philanthropism contain numerous progressive and for their age exemplary components.

Pietistic

Definition:

• (a.) Alt. of Pietistical

Example Sentences:

• (1) Someone should point out, in these days when the constitution is so constantly and pietistically invoked, that political parties are not mentioned in the constitution, and that the prescient founders warned emphatically against them for reasons that should be clear to us now.