Is there a hint system based on text recognition on the screen?

Question

Fonts

Good afternoon.
Is there a hint system based on text recognition on the screen?
Example: "The system, working in the background, constantly monitors any text on the screen and if there is a match with any cell in the database, a hint appears."
Or something similar, but without recognition. Where you simply select text in any application and use a hot key or from the context menu to select a match check.

Answer 1

does not exist
but translators exist