Game worn jersey: Defines any jersey worn during an NHL game. This can include jerseys worn for a single period, to an entire season.
Game issued jersey: A jersey that was made for a player to wear, but for unforeseen circumstances such as an injury, was not worn on the ice.
Set: Contains a jersey for every member of the team, and is worn for a defined time frame determined prior to the season's start. Jerseys will be used for the duration of the time frame barring any jersey being too heavily damaged, or a significant milestone occurring. This will result in the jersey being removed from the set and replaced.
COA: Acronym for "Certificate of Authenticity"; also referred to at times as a "Letter of Authenticity".
Team repair: Any fix done to a jersey by the training staff. Predominantly this consists of holes and rips that have been sewn together or patched up.
Board burn: A type of mark that occurs when the jersey is subjected to a high level of friction which results in the polyester fabric melting and hardening. This happens most frequently when a player is hit against the boards.
Stick mark: Encompasses any black or dark marks on a jersey which may have come from impact with black stick tape, or a puck. For goalie jerseys these marks are frequently referred to as "puck marks".
Photo Matching: The act of comparing visible marks on a jersey to photographs taken during its use in a game. The goal of this is to further confirm the jerseys authenticity and add a unique side piece to accompany the jersey.