noun substitute

  edgood  —  Grammar Tips
This is not an official grammatical term. Rather, I made it up to refer to three structures in our language that can step in and perform the roles of the noun: (1) nominal clauses, (2) infinitive phrases, and (3) gerundive phrases. All great writers routinely use these structures, though they will use a true noun when it gets the job done.

Here are examples of the three main noun substitutes:
The fact that you visited shows your interest in good writing. (Nominal clause acting as the subject of the sentence.)

He wanted to win the game. (Infinitive phrase used as a noun, the object of the transitive verb want.)

He perfected his technique of swinging the golf club. (Gerundive phrase serving as the object of the preposition of.)