I have already established that the Introverted Perceiving functions relate to noun-phrases in language. This makes them fairly easy to recognize.
The Creating/Empowering Pi functions of the Ej types relate to noun-phrases that refer to objects with a very situational existence. As Empowering functions they are functions of contingency and arbitrariness. The names that they constitute are as such names that exist for very arbitrary reasons.
Examples: "the IBM organization", "the davis-putnam procedure", "socionics"
The Accepting/Limiting Pi functions of the Ip types relate to noun-phrases that have a single, unmistakable interpretation. They signify concepts that are in themselves absolute such that they can be understood by a person from the moment they are picked up.
Examples: "love", "water", "personality", "reality"
- in as far Static types use Pi functions at all, Ijs use the Creating/Empowering version, whereas Eps use the Accepting/Limiting version.
- one of the reason I type socionics' descriptors with a capital letter, is because I don't want people to interpret them at face value as most Irrationals would be inclined to. As far as I, or any Rational, is concerned, the names are arbitrary and their usage in the system is what has them make sense.
- it is in the grey area of the two that the difference between Rationals and Irrationals is most strongly felt. Is, "socionics", for example, an arbitrary name, or one that makes genuine sense? People of different types will give different answers.
- possible inaccuracy: Si is also responsible for this "arbitrariness" as opposed to the sensibility of Ni