The terminology in this hobby is very inconsistent. I personally use the term "game-ready" for any item, including balls and bats, that are available for use in a game but not used. ( EG extra post-season balls after the last game.)

I use "team-used" for items used in practice, or otherwise to help a team, but not required by the rules as part of the game. Thus, an official batting-order card given to the umpire is game-used. But a dugout lineup card is team-used because it's not required by the rules, and a mistake on the dugout card has no official significance. A pitcher's rubber on the mound is game-used; but in the bullpen it's team-used, etc. All this is just my own preferences in terms.

The best suggestion is for sellers to give more detailed descriptions to avoid confusion on the inconsistent terms in our hobby.